Question

{y=2x+3
{y=-x-9 solve each system of equations by substitution

Answer 1

Substitute y = 2x + 3 into y = -x - 9

2x + 3 = -x - 9

Solve for x in 2x + 3 = - - 9

x = -4

Substitute x = -4 into y = 2x + 3

y = -5

Therefore,

x = -4

y = -5