Solving Quadratic Systems Graphically?

Solve the following systems by graphing on your calculator or a website and give the solution

Then show how the solutions would be verified, by using the LEFT SIDE = RIGHT SIDE method

y=2x^2 + 7x − 5

y=−1/3^2 − 2x + 9

2 Answers

  • 3 months ago

    The second equation wouldn't be a quadratic unless it included an x² term.

    The intended equations seem to be:

    y = 2x² + 7x - 5

    y = (-1/3)x² - 2x + 9

    To solve this graphically, graph both equations on the same paper. Then look for the intersection point(s).

    I've done that using a website in the link below.

  • Jim
    Lv 7
    3 months ago

    Quadradic Equation solution for f(x) or y = ax² +bx + c is:

    x = -b/2a +-√(b² -4ac)/2a

    I like this 'form' since it shows the Vertex offset by "both sides"

    Note: your formulas might be incorrect (the second equation).

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