Question

This system has one solution.

{y=6x−11
{y=x^2+4x−10

What is the y-coordinate of the solution?

Answer 1

hello : 
{y=6x−11
{y=x²+4x−10
x²+4x−10 = 6x-11
x²+4x−10-6x+11 =0
x²-2x+1=0
(x-1)²=0
x-1 = 0

x = 1

 the y-coordinate of the solution is y =6(1)-11 = -5