Evan is not correct. While 25 is 125% of 20, it was <em>not</em> 125% more. That would be adding on to the 100% already there, for a total of 225%. It's actually only 25% more because of this.
The slope is -1/2x in this case because it is always next to a variable y=mx+b.
(1, 3 )
to determine if the given points are a solution to the equation
They must lie on the given line to be a solution
the only one that is on the line is (1, 3 ) and is therefore the only solution
Y=mx+b
m=slope
b=yint
y=16500-1500x
y=-1500x+16500
slope is -1500
yintercept is 16500
