y=-2x² how do I find the vertex and other points to graph​

Question

y=-2x²
how do I find the vertex and other points to graph​

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Eden 1 month 2021-10-21T08:22:11+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-10-21T08:23:43+00:00

    For finding vertex, problems like ax^2 such as yours, would be (0,0). Problems like ax^2 + c, would be (0, c) and problems like ax^2 + bx + c, would be solved by -b/2a.
    Now back to the question, the vertex would be (0,0). And to find other points, you make a table.
    X | Y
    2 | -8
    1 | -2
    0 | 0
    -1 | -2
    2 | -8
    To find the X’s you just put the numbers that are to the left and right of 0 (which is the x of the vertex). Then, you plug in those numbers into the equation and solve. You will notice a pattern with the Y’s every time you make a table for a parabola. I hope this helps 🙂

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