Question

A pair of equations is shown below:

y = 3x + 1
y = 4x – 7

What is the solution to the pair of equations?
(8, 25)
(–8, 25)
(–8, –25)
(8, –25)

Answer 1

The answer is (8,25)
8x3=24+1=25
4x8=32-7=25

Answer 2

3x + 1 = 4x - 7
3x - 4x = -7 - 1
-x = -8
x = 8 <==

y = 3x + 1
y = 3(8) + 1
y = 24 + 1
y = 25 <===

solution is (8,25)