Question 853166
An object is thrown in the air. The trajectory of the object us represented by the equation Y=-1/5x²+2x+4. Y is the height of the ball in feet at the horizontal distance of x feet from the thrower. 

Complete a table wich models the trahectory of the ball.
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{{{y = -x^2/5 + 2x + 4}}}
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Pick values for x and find y.  Positive x only, negative makes no sense.
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x = 0, y = 4
x = 0.5, y = 4.95
x = 1, y = 5.8
x = 2, y = 7.2
etc
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Use Excel if you have it.
Here's a table from graph software.

..x.....y
0.00	4
0.25	4.4875
0.50	4.95
0.75	5.3875
1.00	5.8
1.25	6.1875
1.50	6.55
1.75	6.8875
2.00	7.2
2.25	7.4875
2.50	7.75
2.75	7.9875
3.00	8.2
3.25	8.3875
3.50	8.55
3.75	8.6875
4.00	8.8
4.25	8.8875
4.50	8.95
4.75	8.9875
5.00	9
5.25	8.9875
5.50	8.95
5.75	8.8875
6.00	8.8
6.25	8.6875
6.50	8.55
6.75	8.3875
7.00	8.2
7.25	7.9875
7.50	7.75
7.75	7.4875
8.00	7.2
8.25	6.8875
8.50	6.55
8.75	6.1875
9.00	5.8
9.25	5.3875
9.50	4.95
9.75	4.4875
10.00	4