Question

Show that the point p(-6,2), Q(1,7) and R(6,3) are the vertices of scalene triangle​

Answer 1

the sides are different lengths as shown in the diagram

Explanation:

Plotting the three points, you can see by "inspection" that the middle length side (PQ) is longer than the shortest side (QR) and shorter than the longest side (PR). You could use the distance formula to show this, or you can use a scale to measure the drawing.

A triangle with three unequal sides is a scalene triangle. ∆PQR is scalene.