Question

Bill’s car gets 30 miles to the gallon. For every gallon of gas it consumes, his car runs 30 miles. Use this information to determine whether this relation is a function. Write the equation for the number of miles Bill travels, y, in terms of how much gas it uses, x.

Answer 1

this relation is a function, y=30x

for every ax or 1 gallon, it goes 30 miles.