Question

Will Fan and Medal!!!!!
What's the rate of change between these numbers:(-12,12) --> (4, -4)
(-9, 6) --> (3, -2)
(-3, 12) --> (1, -4)

Answer 1

Okay so you would set it up like this :

y1 - y2
over
x1 - x2

x1 and y1 must be the same coordinate pair
same with y2 and x2

So for the first one you could plug it in like this
12 - (-4)
over
(-12) - 4

Solve to get 16/(-16) can be simplified to -1

Answer 2

http://www.mathwarehouse.com/calculators/slope-formula-calculator.php

Answer 3

Do you understand now? You're basically solving for slope given two coordinate pairs.

Answer 4

rate of change = slope
formula to find slope is \[\huge\rm m=\frac{ y_2 - y_1 }{ x_2- x_1 }\]
in order pair first value is 2nd one is y \[\huge\rm (x_1 ,y_1)(x_2 ,y_2)\]
replace variables by their values and then solve