See attachment file below.
Given that,
Point 1 = (-6,9)
Point 2 = (2,9)
To find,
The slope of a line that passes through the given pair.
Solution,
We have,
x₁ = -6, x₂ = 2, y₁ = 9, y₂ = 9.
The formula for the slope of a line is given by :

Hence, the slope of the line that passes through the given pair is 0.
Substitute the given value into the function and evaluate.
The answer is -10
Answer:
7x+8m+7
Step-by-step explanation:
2(3x+4m)+x+7 =
6x+8m+x+7=
7x+8m+7