Question

Find the slope between the two points: (9,9) and (12,15)

Answer 1

Slope = Change in y / Change in x

Between (9, 9) and (12, 15).

We would use the coordinates from the second point minus that from the first point.

1st point = (9, 9), 2nd point = (12, 15)

Slope = (15 - 9) / (12 - 9)

= 6 / 3

= 2

Slope = 2

Answer 2

15-9= 6
12-9= 3

6/3= 2