When the object reaches the ground, the height is zero, so:
0 = 144 - 16t^2
then you just solve for t, so subtract the 144 over
-144 = -16t^2
then divide by the -16
9 = t^2
then take the square root of both sides
3 = t
therefore, it will take three seconds for the object to reach the ground.
The answer is (7,-1).
x1-y1 and x2-y2 gives you 2-(-5) and 3-4, so you now have a point which is (7,-1) which is the slope.
then you figure out what you divide 56 by to get 4. which is 14. then you divide 42 by the same number 14.
Answer:
1. 32
2. 100
3. 36
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