Question

Show that the given points are collinear using slope formula (-3,-4)(7,2)(12,5)

Answer 1

Step-by-step explanation:

The vertices are A(-3,-4), B(7,2), C(12,5)

Slope m= y2-y1 / x2-x1

Slope of AB= 2+4 / 7+3

=6 /10

Slope of AB=3 /5

Slope of BC=5-2 / 12-7

Slope of BC=3/5

We get,

Slope of AB=Slope of BC Therefore, the points A, B, C lies in a same straight line.

Hence the points A,B and C are collinear.