She should hsve used an open circle
Given points (9,5) = (x1, y1) & (9, -3) = (x2 , y2)
Slope = y2 -y1/ x2 - x1
= -3-5 /9-9
= -8/ 0
As the denominator is zero the slope is ND (not defined)
Answer:
46x^2 + 73x + 15
Step-by-step explanation:
Expand both equations
Wall = (6x + 7)(8x + 5) = 48x^2 + 56x + 30x + 35 = 48x^2 + 86x + 35
Mural = (x + 4)(2x + 5) = 2x^2 + 5x + 8x + 20 = 2x^2 + 13x + 20
Minus them.
Wall - Mural =
(48x^2 + 86x + 35) - (2x^2 + 13x + 20)
(48x^2 - 2x^2) + (86x - 13x) + (35 - 20)
46x^2 + 73x + 15