Which equation represents a line that is perpendicular to line MN?
A:y=-1/4x+9
B:y=1/4x+6
C:y=-4x-7
D:y=4x-6

Answer: The answer is A. y=1/4x+9 i just took this
Step-by-step explanation:
D. y = 4x - 6
The equation that is perpendicular to the line MN should have a slope that when multiplied by the slope of line MN will result to negative one. Therefore,
Therefore,
m₁ × m₂ = -1
Using the 2 coordinates of MN let's find the slope,
(-7, 6)(5, 3)
Therefore,
m₁ = 3 - 6 / 5 - (-7) = -3 / 12 = - 1 / 4
The equation that represent a line perpendicular to the line MN is
y = 4x - 6 because the slope slope(m₂) is 4.
From our formula,
4 × - 1 / 4 = - 1
So, option D meets the requirement.
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