Answer:
see explanation
Step-by-step explanation:
(1)
to calculate the slope m use the gradient formula
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
with (x₁, y₁ ) = (- 2, - 5) and (x₂, y₂ ) = (18, - 5)
m = [tex]\frac{-5+5}{18+2}[/tex] = [tex]\frac{0}{20}[/tex] = 0
(2)
divide number of miles travelled by number of gallons used
= [tex]\frac{132}{6}[/tex] = 22 miles per gallon
