Answer:
35 miles per gallon is the unit rate of gas usage for the car.
Step-by-step explanation:
Slope of the line will give the unit rate of gas usage for the car:
Slope m for points [tex](x_1,y_1)(x_2,y_2)[/tex]:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
We have :
[tex](x_1,y_1)(x_2,y_2)[/tex] : (2,70) (3,105)
Slope of the lin e:
[tex]m=\frac{105-70}{3-2}=\frac{35}{1}[/tex]
35 miles per gallon is the unit rate of gas usage for the car.
