Janet draws triangle PQR with vertices P(1,1), Q(-2,4), and R(1,7). She claims that the
triangle is an isosceles right triangle. Which statement shows that Janet is correct?
The slope of PQ is 1, which is the reciprocal of the slope of QR, and PQ and QR
are equal to √6.
The slope of PQ is 1, which is the reciprocal of the slope of QR, and PQ and QR
are equal to 3√/2.
The slope of PQ is -1, which is the negative reciprocal of the slope of QR, and
PQ and QR are equal to √6.
The slope of PQ is -1, which is the negative reciprocal of the slope of QR, and
PQ and QR are equal to 3√/2.
