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What is the solution set for the following equations:

y = 5x -7 and y = 2x + 5
(3,12)
(4, 13)
(-7,5)
(2,5)

please help!

1 Answer

2 votes

Answer:

(4,13)

Explanation:

Set the 2 equations equal to each other and solve for x.

5x - 7 = 2x + 5 Subtract 2x from both sides

3x - 7 = 5 Add 7 to both sides

3x = 12 Divide both sides by 3

x = 4

Now plug 4 back into either of the original 2 equations to find y.

y = 5x -7

y= 5(4) -7

y = 20 -7

y= 13

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