Using the intercept in graphing, find the vertex and intercept and aketch of S=-16t^2+64r
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You probably mean S = -16t^2 + 64t
Same as y = -16x^2 + 64x
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At x = 0, y = 0
At y = 0, x = 0 and x = 4
That gives you only 2 points, not sufficient to define a parabola.
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You can make a table to generate additional points:
x y
-4.0 -512
-3.5 -420
-3.0 -336
-2.5 -260
-2.0 -192
-1.5 -132
-1.0 -80
-0.5 -36
0.0 0
0.5 28
1.0 48
1.5 60
2.0 64
2.5 60
3.0 48
3.5 28
4.0 0
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DL the FREE graph software at
www.padowan.dk
Use Insert, enter -16x^2 + 64x
Pick a color