Can someone please help me I really don't know how to do this.

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

the correct answer would be d because the slope is -2/2=1 and the y intercept is at 2 so that is the correction equation

the five is the numerator