A line extending from the lower left to the upper right has a <em>positive</em> slope.
Answer:
$45.00-$10.00=$35.00
2.50x14= $35.00
Therefore he bought 14 student tickets
Their coefficients are as follows (in order):
4
5
-4
-1
So if you were putting them in increasing order it would be
C, D, A, B
