book Maths Puzzle Numerical Ability

Find the equation of the line passing through the points (-3,8) and (-4,-5)

A) y=13x-47
B) y=13x+47
C) y=13x-31
D) y= -13x-31

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book Other Question

I have a word problem I need help with:

Brett started on a 70-mile ride at 20 mph. After time he became tired and slowed down to 12 mph. The entire trip was 4 1/2 hours. How far did Brett travel when he slowed down t 12 mph. If 64 feet of rope weighs 20 pounds, how much will 80 feet of the same rope weights?