And set x 0 to get that. Follow along with this tutorial to see how to take an equation intercept form and use it to find the x-intercepts vertex and axis of symmetry. Learn about the parts of a parabola.
You can put this solution on YOUR website.
Notice that your finger touches the x-axis at -30 and 40. And set x 0 to get that. Intercepts from an equation. The x -intercepts of the function f x a x 2 b x c a 0 are the solutions of the quadratic equation a x 2 b x c 0.