to find the slope for the first one, use the formula [tex]\frac{y2-y1}{x2-x1}[/tex]
(It's the slope formula)
so... [tex]3=y2, 3=y1, 2=x2, 10=x1[/tex]
then plug in... [tex]\frac{3-3}{2-10} =\frac{0}{-8} = 0[/tex]
this line has a slope of 0
As for the miles problem, to find mph, the miles have to be at 1.
so... [tex]4x=242\\x=60.5[/tex]
therefore, he drove 60.5 mph
