Question

The given graph shows the cost of two types of tomatoes, $A$ and $B$, based on their weights. Calculate the cost per pound of the two types of tomatoes in the same order.

• A. $\$\frac{7}{6}perIb,\$\frac{4}{5}perIb$
• B. $\$\frac{11}{6}perIb,\$\frac{3}{5}perIb$
• C. $\$\frac{1}{6}perIb,\$\frac{3}{5}perIb$
• D. $\$\frac{7}{6}perIb,\$\frac{3}{5}perIb$

Answer 1

The correct option is D $\$\frac{7}{6}perIb,\$\frac{3}{5}perIb$

For $A$:
Let’s consider the points $(3,3.5)$ and $(0,0)$.

$\text{unit rate}=\text{slope}=\frac{\text{change in}y}{\text{change in}x}=\frac{3.5}{3}=\$\frac{7}{6}perIb$

For $B$:
Let’s consider the points $(5,3)$ and $(0,0)$.

$\text{unit rate}=\text{slope}=\frac{\text{change in}y}{\text{change in}x}=\$\frac{3}{5}perIb$