Answer:
Lines a and b are perpendicular.
Step-by-step explanation:
When you find the slope of each line, you should use the formula [tex]\frac{y2-y1}{x2-x1}[/tex]. For line a you get the slope to be [tex]-\frac{4}{3}[/tex], for line b the slope is [tex]\frac{3}{4}[/tex], for line c the slope is [tex]\frac{4}{3}[/tex]. Because line b is the opposite reciprocal of slope a, we know that these two lines are perpendicular. (opposite reciprocal means to flip the sign in front of the slope and flip the denominator and numerator of the slope)
