Vertical lines have undefined slope. They are not y=mx+b equations, but simply x= equations.
This line passes through the point (-1,12) has an x-value of -1. Therefore the equation of the line is simply x=-1
In a trapezoid, with bases 
and 
and height 
, the area is given by
In your case:
so, the formula becomes
Since the area is 
, we have
Answer:
437-418=19
Step-by-step explanation:
418+19=437
Let d = Darlene's dog's weight
let l = Leah's dog's weight
d = 5l
d + l = 84
so, 5l + l = 84, which means 6l= 84
so, l = 84/6 = 14d = 5(14) = 70
<span>Darlene's dog = 70 lbs, Leah's dog = 14 lbs</span>
The answer would be that janey would have to go to bed at 9:40pm
