−
3
(
7
−
2
x
)
=
−
1
−
4
x

answer: d. $20

step-by-step explanation:

just took the test

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c