Question

Y=-x+4
X + 2y = 8
How many solutions does this linear system have ?

Answer 1

Explanation:

x + 2(-x+ 4) = 8

x - 2x - 8 = 8

-x - 8 = 8

-x = 16

x = -16

y = 16 + 4 = 20

(-16, 20)