If you are trying to find the slope of a line that is perpendicular to another line, you would need to change the sign and change it to the fraction's reciprocal.
m = 
Change the sign of the slope:

Finally, make the reciprocal of the original slope (switching the numerator and denominator):

Simplify:
3
Final answer:

<h3><em>X CO-ORDINATE = 3</em></h3><h3><em>Y CO-ORDINATE = -7</em></h3><h3><em>HOPE IT HELPS.....BYE....</em></h3>
Answer:
the answer is 2
Step-by-step explanation:
52÷2=26
26÷2=13
[15-0] would be a numerical expression for this. :P
A angle 2
B Angle 3
D Angle 5
E Angle 6
C Angle 4