SOLUTION: Hi! I need to find the following focus points of the following parabola! y=7*x^2 y=2*x^2-2x-2

SOLUTION: Hi! I need to find the following focus points of the following parabola! y=7x^2 y=2x^2-2x-2

Question 1066692: Hi!
I need to find the following focus points of the following parabola!
y=7*x^2
y=2*x^2-2x-2
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
y = 7x^2
:
Note that a = 7 and the vertex of this parabola is (0, 0) then, the focus is (0, 0+(1/4a) = (0, 1/28)
:
y = 2x^2 -2x -2 = 2(x - (1/2))^2 - (5/2)
:
Note a = 2, and the vertex is ( (1/2), (-5/2) ) then the focus is ( (1/2), (-5/2 + (1/8) ) = ( (1/2), (-19/8) )
:

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