SOLUTION: please help me solve y=-3x^2-4..also need to give the minimum and maximum point , the equation of the parabola from the origin, then state whether the parabola opens upward or down

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: please help me solve y=-3x^2-4..also need to give the minimum and maximum point , the equation of the parabola from the origin, then state whether the parabola opens upward or down      Log On


   

Question 440789: please help me solve y=-3x^2-4..also need to give the minimum and maximum point , the equation of the parabola from the origin, then state whether the parabola opens upward or downward
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

Using the vertex form of a parabola, y=a%28x-h%29%5E2+%2Bk where(h,k) is the vertex

y = -3x^2 -4

 1) parabola opens downward a = -3 < 0  Vertex Pt(0,-4) is a maximum pt

 2) Line of symetry is the y-axis

 3) relative to the the translation form the origin: down 4