Question

The graph shows the relationship between the weight of almond yogurt and its cost. What will be the cost of $2$ oz of almond yogurt?

• A. $\$2.5$ per oz
• B. $\$2$ per oz
• C. $\$0.5$ per oz
• D. $\$0.4$ per oz

Answer 1

The correct option is D $\$0.4$ per oz

The graph is a straight line and passes through the origin.
Hence, the graph shows a proportional relationship.
$x_1=20,y_1=8;x_2=25,y_2=10$
Unit rate $=\frac{\text{Rise}}{\text{Run}}=\frac{y_2-y_1}{x_2-x_1}=\frac{10-8}{25-20}=\frac{2}{5}=0.4$
Cost of yogurt $=\$0.4/oz$