Question

Help please I need it!!

Answer 1

First find the slope of A.

Slope=(y2-y1)/(x2-x1)=(4-0)/(0--7)=4/7

For a line to be perpendicular to line A, it must have a slope that is the negative reciprocal of the slope of A.  Mathematically:

m1*m2=-1 and in this case the perpendicular line will have a slope of:

4m/7=-1

4m=-7

m=-7/4 

So the slope of the line perpendicular to A is -7/4