## sugargurl333 Use the distance formula to decide whether PQ=QR P(-4,3) Q(-2,1) R(0,-1) 2 years ago 2 years ago

1. Outkast3r09

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

2. Outkast3r09

^2

3. Outkast3r09

they are equal

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...