Solve the system...y=x2+ 5x+4 and y=8x+8

Question

 solve the 'system"

 

y= x2 + 5x + 4

y= 8x + 

Answer 1

let y = y, so, x^2 + 5x + 4 = 8x + 8

 

Simplify: x^2 - 3x - 4 = 0

 

Factor: (x + 1)(x - 4) = 0

 

x = -1 x = 4