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.