Question

Y=-4x-3
y=-2x+1
x=?
y=?

Answer 1

x = -2

y = 5

Explanation:

y = -4x - 3

y = -2x + 1 Multiply this whole equation by -1

-1(y = -2x + 1) = -y = 2x - 1

y = -4x - 3

-y = 2x - 1

0 = -2x - 4

4 = -2x

x = -2

y = -4x - 3 (Plug in x)

y = -4(-2) - 3

y = 8 - 3

y = 5