SOLUTION: what is the equation for a solving a parabola given two points? the points are (1,20_ and (2,21)

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Question 874452: what is the equation for a solving a parabola given two points? the points are (1,20_ and (2,21)
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
y = ax^2 + c
21 = 4a + c
20 = a + c Subtract
1 = 3a
1/3= a and c = 59/3 60%2F3+-+1%2F3
y = (1/3)x^2 + 59/3 one such parabola opening Upward with V(0,19 2/3)