It should look like a parabola with the part below x-axis cut off. the left side starts from x=-1, opening upward & to the left, the right side starts from x=2, opening upward and to the right.
Substitute the 7 in anywhere there is an x.
49-5=44
-3.8 - 0.5m <== ur expression
the variable (m) represents number of minutes
Y = 6 because - ( 1 ) + 7 = 6
