Solve each equation by graphing the related function. Check Substitute -1 and 1 for x in the quadratic equation. Graph the points and reflect them across the axis of symmetry.Two other points are (1, 0) and (2, 6).2x2 - 2 = y, or y = 2x2+ 0x - 2 Step 2 Graph the related function. A) 2x2 - 2 = 0 Step 1 Write the related function. Solving Quadratic Equations by Graphing Solve each equation by graphing the related function. Recall that a quadratic function may have two, one, or no zeros. In other words, find the zeros of the related function. One way to solve a quadratic equation in standard form is to graph the related function and find the x-values where y = 0. y = ax2 + bx + c 0 = ax2 + bx + c ax2 + bx + c = 0 Notice that when writing a quadratic function as its related quadratic equation, you replace y with 0.
A quadratic equation is an equation that can be written in the standard form ax2 + bx + c = 0, where a, b, and c are real numbers and a ≠ 0. Solving Quadratic Equations by Graphing Every quadratic function has a related quadratic equation. Warm Up Write an equation in point-slope form for the line with the given slope that contains the given point. Solving Quadratic Equations by Graphing CONFIDENTIAL