Michael is with the school play by measuring fabric for the costumes. he needs 9 yards of fabric. he has 12 feet of fabric. how many more feet does he need?

whatvare the choices

step-by-step explanation:

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