Is the line through points P(–8, –7) and Q(–10, –11) perpendicular to the line through points R(1, –2) and S(–3, –4)? Explain.
a.
No, their slopes are not reciprocals.
b.
No, their slopes are not opposite reciprocals.
c.
Yes, their slopes are equal.
d.
Yes, their slopes have a product of –1

Question

Is the line through points P(–8, –7) and Q(–10, –11) perpendicular to the line through points R(1, –2) and S(–3, –4)? Explain.
a.
No, their slopes are not reciprocals.
b.
No, their slopes are not opposite reciprocals.
c.
Yes, their slopes are equal.
d.
Yes, their slopes have a product of –1

mathstudent55 · Answer

The slopes of perpendicular lines are negative reciprocals.
You need slopes.
Do you know how to find the slope of a line given two points on the line?