If your car gets 28 miles per gallon, how much does it cost to drive 350 miles when gasoline costs $2.50 per gallon?
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the equation of a line in point-slope form is
y - b = m(x - a)
where m is the slope and (a, b ) is a point on the line
y + 1 = (x + 5) is in this form
(a) with slope =
(b) point on the line = (- 5, - 1 ) = (a, b)