Question

What is the solution to this system of equations?

y=2x+5
4y=x-1

options

a) (1,3)
b) (-3,-1)
c) (-1,-3)

Answer 1

B) (-3,-1)

Explanation:

First, you plug in the numbers to see if they work out. y=2x+5 would change to -1=2(-3)+5, which would in fact equal -1. Then, do the same thing with the other equation. 4y=x-1 would change to 4(-1) = -3-1, which equals -4=-4, which is correct.