How to Write a Quadratic Equation from a Graph
Super easy! Find the y-intercept and pick two other points. Plug them into y = ax^2 + bx + c and solve for a, b, and c.
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Check the graph for its vertex and two other points. Use them to find the quadratic equation in the form y = a(x-h)^2 + k, where (h, k) is the vertex.
Just match the graph to its standard form look-a-like, y = ax^2 + bx + c, and solve for constants.
Honestly, just find the parabola's vertex and another point. Use those to determine the equation.
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