Answer:
C
Step-by-step explanation:
The measure of the rate of change is the slope of the line.
calculate slope m, using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
let (x₁, y₁ ) = (0, 2) and (x₂, y₂ ) = (4, 18) ← 2 points on the line
substitute these values into the formula for m
m = [tex]\frac{18-2}{4-0}[/tex] = [tex]\frac{16}{4}[/tex] = [tex]\frac{4}{1}[/tex]
Now, y- axis is cost in $ and x- axis is weight in lb
Then rate of change is $4 per 1 lb
