## anonymous one year ago 8.5 gallons of gas to drive 243.1 miles, 3 gallons of gas to drive __ miles.

1. mathstudent55

This is a proportion problem. Solve for x. Cross multiply. $$\dfrac{8.5}{243.1} = \dfrac{3}{x}$$

2. anonymous

i thought you had to find the slope $m =\frac{ {y2-y1} }{ x2-x1 }$