Answer:
The y-coordinate of the solution is 25
Step-by-step explanation:
Given in the question is two polynomial equations
Equation1
y = 8x + 9
and
Equation2
y = x² + 4x + 13
To find the y-coordinate of the solution, put the value of y in equation1 to equation2
8x + 9 = x² + 4x + 13
x² + 4x + 13 - 8x - 9 = 0
x² - 4x +4 = 0
(x-2)(x-2) = 0
x = 2
Put the value of x in equation1
y = 8x + 9
y = 8(2) + 9
y = 16 + 9
y = 25
So, the y-coordinate of the solution is 25
and the coordinates are (2,25)
