Number 7 is the word problem and letter D are the directions please show the steps/work please

f(x) is going down by 4

step-by-step explanation:

(its either that or its going left by 4)

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