Question

I need help in this zzzzzzz

Answer 1

Answer:

$7$

Solution:

This is a linear function. This means means that r is our rate of change.

To find r recal following formula

$r=\frac{\Delta y}{\Delta x} = \frac{y_2-y_1}{x_2-x_1}$

Since this is a linear function we can choose any two points. I will choose the first two for simplicity

$\Displaystyle \therefore r = \frac{42-14}{6-2}=\frac{28}{4}=7$