Question

Use the distance formula to decide whether PQ=QR
P(-4,3)
Q(-2,1)
R(0,-1)

Answer 1

\[\sqrt{(y _2-y _1)^2+(x _2-x _1)}\]

Answer 2

^2

Answer 3

they are equal

Answer 4

D\[d^2 = \sqrt{(x _{p} - x _{q})^2 + (y _{p}-y _{q})^2} for PQ = d^2 =\sqrt{-2^2 +2^2 } \ \[= \sqrt{8}\]
so, now do the same thing for the segment RQ and compare...