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

The slope formula is
`(Y2-Y1)/(X2-X1)`. For the two points,
`(x,y)`. You can pick any of the Y and X from these two points, but only once.
`(9-15)/(9-12)` =
`(-6)/(-3)` = 2 or
`(15-9)/(12-9)` =
`(6)/(3)` = 2 and both will equal to. The answer for the slope is 2.