N=64.
32+64=100
64/8=8
sqrt (64+225)= sqrt (289) = positive and negative 17
55km/60minuess=0.916km per min. 0.916/60second=0.01527km per sec. convert km to feet. which is 50 feet. your answer is 50 feet per second
So.. take a peek at the picture... let's get two points from it, hmm say 0,4 notice it touches the y-axis there, and say hmmm -4, 1, almost at the bottom of the line


once you get the slope and solve for "y", that'd be the equation of the line.