# 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

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- PuzzlingLv 73 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.

Source(s): https://www.desmos.com/calculator/m2h9dzzjhf - JimLv 73 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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