Answer:
Explanation:
$0.70 per mile is the rate (slope), $10 flat fee is your starting cost (i.e. your y-intercept).
By slope - intercept linear equations we have:
(a) y=mx+b where m is the slope and b is the y-intercept.
y=0.70x+10
(b) The graph is linear on the coordinate plane because the slope (rate) is constant.
(c) The slope of this graph is $0.70 per mile and the y-intercept is $10 flat fee. Your cost is $10 initially and $0.70 for every mile driven.