Mathematics High School

Solve the system of equations by substitution. y = 2x y = x +1​

Answers

Answer 1

Step-by-step explanation:

y = 2x

y = x + 1

y-1 = x

y = 2x

y = 2 (y - 1)

y = 2y - 1

y = -1

Related Questions


What is the slope of the graph below?

Answers

Answer:

C

Step-by-step explanation:

Full equation: y = 3/2x + 1

Can someone help me please with the answers from one to 10 and tell me how you get it in a notebook please

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i’m not going to work them out, but just use the formula: m= y^2-y^1/x^2-x^1 :)

If the m =1/2 and the b = -2, then the linear equation is

Answers

Answer: y=  1/2x - 2

Step-by-step explanation:

y= mx+b

m= 1/2 (plug it in)

b= -2 (plug it in)

x= ?

The Gonzalez's updated their bedroom by purchasing a new lamp for $89.95 and a comforter set for $239.99. They paid 6.5% sales tax on their purchases. If the Gonzalez's paid $351.72 total, determine if they paid the correct amount.

Answers

Answer:

Not exactly

Step-by-step explanation:

Cost lamp = $89.95Cost of comforter set = $239.99Sales tax = 6.5%

Total payment:

($89.95 + $239.99)*1.065 = $351.39

Total amount is a little different:

$351.72 vs $351.39

A triangle has sides of lengths 9,7, and 12. Is it a right triangle? Explain.

Answers

Answer:

A triangle has sides of lengths 9,7, and 12 is not a right triangle .

Sahai took $40 to the local carnival. The entrance fee to get into the carnival cost X dollars. Sahai paid for 5 people (including herself) to get into the carnival. Write an expression that represents the amount of money, in dollars, that Sahai had after she paid for the entrance fee for the 5 people.

Answers

Answer:

40-5x

Step-by-step explanation:

Sahai starts with 40 and loses 5 times the entrance fee, which is represented by x. So, 40-5x is the expression

f(x) = 2x - 4
f(3) = [?]

Answers

2 would be the answer. Replace the x with the three and multiply that with the 2 and then subtract 4.
2(3)-4 =2 very simple replace x with 3

Write an equation in Slope intercept form of the line that passes through the given points (-3,4) (1,4)

Answers

answer would be “y=4”

to find the answer: first you have to find the slope with the given points. (y2 - y1 / x2 - x1)

plug it in to get: (4-4 / 1- -3) = 0/4 = 0

this means the slope would be 0

if the y intercepts are the same then it usually indicates that the slope would be 0 and that the answer is the y intercept.. but if you don’t understand how to get slope-intercept using other coordinates then here’s how:

you can use point-slope formula (y-y1 = m (x-x1) in order to do this just plug in one of the coordinates. in this case an example of point-slope form would be:
y-4 = 0 (x - -3) or y-4 = 0(x-1)

it doesn’t matter which coordinates you use..

then solve the point slope for slope-intercept.

y-4 = 0(x-3) multiply 0 with x and -3
y-4 = 0x move -4 to the right by adding 4

y = 0x + 4 or y = 4 would be your answer!

The equation for the line that passes through the point A ( -3 , 4 ) and

B ( 1 , 4 ) is y = 4

What is an Equation of a line?

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

And y - y₁ = m ( x - x₁ )

y = y-coordinate of second point

y₁ = y-coordinate of point one

m = slope

x = x-coordinate of second point

x₁ = x-coordinate of point one

The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Given data ,

Let the first point be A ( x₁ , y₁ ) = A ( -3 , 4 )

Let the second point be B ( x₂ , y₂ ) = B ( 1 , 4 )

Now ,

The equation for the line is given by

y - y₁ = m ( x - x₁ )

To find the slope of the line ,

Slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Substituting the values , we get

m = ( 4 - 4 ) / 1 - ( - 3 )

m = 0

So , the slope of the line is 0

Now ,

The equation of line will be

y - 4 = 0 ( x - ( -3 ) )

y - 4 = 0

Adding 4 on both sides , we get

y = 4

So , the equation of the line is y = 4

To learn more about equation of line click :

https://brainly.com/question/14200719

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Please help y’all I really need help with this

Answers

Answer: y = -x - 4

Step-by-step explanation:

f= -r + 4/3 b
find b
submit answer

Answers

Answer:

b=[tex]\frac{3f}{ 4} + \frac{3r }{ 4 }[/tex]

Step-by-step explanation:

5x+6=2x+15 solve for x

Answers

Answer:

the answer is:

5x - 2x = 15 - 6

3x = 9

x = 3

Please help!! And show work please! I'll give brainlist..!

Answers

what you put is correct because two negatives make a positive so it would be 5 + 7 making it the greatest value

i'm not sure what's the answer?
:)​

Answers

i believe the answer is  B.

Help me find the slope please

Answers

Pick two points
(2, 18) and (4,21)
(21-18)/(4-2) = 3/2
The slope is 3/2

What are the solutions of x2 + x = 11

Answers

Answer:

x = 11/3

Step-by-step explanation:

x2 + x = 11

Combine like terms

3x = 11

Divide both sides by 3

x = 11/3

HELPPP please please please

Answers

Answer:b

Step-by-step explanation:

Penny reads 10
pages in
hour. What is the unit rate for pages per hour? For hours per page?
The unit rate is 30 page(s) per hour.
(Simplify your answer. Type an integer, proper fraction, or mixed number.)
The unit rate is hour(s) per page.
(Simplify your answer. Type an integer, proper fraction, or mixed number.)

Answers

Answer:

Hr/p is 1/30 Or 1hr every 30pg

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

The two lines representthe amount of water, over time, in two tanks that are the same size. Which container is filling more quickly? Explain how you know.

Answers

Answer:

no picture sorry but if either tanks line goes higher than the other than its filling faster

Step-by-step explanation:

Suppose Adriana spends $ 73.00 dollars on T-shirts and pants. A T-shirt costs $5.50 and pants cost $25.50. This is an equation in two variables. What would be a solution (to the variable) above if she buys 2 pair of pants.

Answers

Answer:

She spent 51 dollars on pants and 22 on t-shirts so she bought 4 shirts

Step-by-step explanation:

Can someone please explain to me how to calculate your GPA and also on how to find out what your total grade points is... I stay confused

Answers

Answer:

Here is the explanation of how I was taught to do it :)

Step-by-step explanation: In its easiest form, an A=4, B=3, C=2, D=1, F=0.

If the class is 2 credit.......Multiply each numeric grade value by the number of credits the course was worth

Add these numbers together

Divide 45 by the total number of credits you took, in this example,13.

Your Weighted by Credit Hour GPA = 3.46

It depends on your school. Sorry this was not the most clear, I was taught like 2 years ago, and now I kinda forgot but hopefully this helps a lil dont get mad :)

following data, what would be the value of x?

Answers

Answer:

The answer is C. 10

Step-by-step explanation:

Answer:

Step-by-step explanation:

question please

how are the triangles congruent ?

AAS , AA , ASA , SAS , or Not enough information

Answers

I have the answer. The answer is AAS

if a snail crawls 12 centimeters per hour, how long will it take for the snail to travel 1 meter?

Answers

Answer:

8 1/3 hours : )

what is 4j+8=56 full answer

Answers

Answer:

j=12

Step-by-step explanation:

hope this helps

For f(x) = -4 - 6x, find f(5)

Answers

Answer:

-34

Step-by-step explanation:

Insert the 5 into the place of the X.

Then solve:

-4 - 6(5)

= -4 - 30

= -34

The answer is -34, the equation is asking what the output would be if x were to equal 5. -6 multiplied by 5 equals -30, then -4 and -30 combined is -34

10=h/2+8 solve, its for algebra 1

Answers

Answer:

Subtract 8 from both sides which lead it to 2=h/2, then multiply two for each side then it turns to 4=h

hi need help with math
some one help

Answers

Answer:

Ether C or D. hope this helps

help please? 26x-2(3x+4y)-10y

Answers

Answer:

20x-18y

Step-by-step explanation:

26x-2(3x+4y)-10y

26x-6x-8y-10y

20x-18y go doawnload the app photomath its a great tool

Can someone help me out please!!

Answers

x =56 y =90

Step-by-step explanation:

hxjxskalskdhxgxh

what they said ahhdneoeicirnwnuwhenekeicifv

can someone please help me

Answers

the answer is 2p - 4 :)

Answer:

I think it's -2p or 2p-4

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