X^{\msquare} \log_{\msquare} \sqrt{\square} \nthroot[\msquare]{\square} \le \ge \frac{\msquare}{\msquare} \cdot \div: X^{\circ} \pi \left(\square\right)^{'} \frac{d}{dx}. The intercept of a. Explore math with our beautiful, free online graphing calculator. Graph functions, plot points, visualize algebraic equations, add sliders, animate graphs, and more. A parabola is the set of all points \((x,y)\) in a plane that are the same distance from a fixed line, called the directrix, and a fixed point (the focus) not on the directrix. See pictures, formulas and an interactive applet to practice with different parabolas. I also work a problem that finds the equation of a parabola if you. To find the zeros of a parabola, set f(x) = 0 and solve for x. The quadratic formula, factoring, completing the square, and graphing. The graph of a quadratic function is a. X = (p + q)/2 Finding the x intercepts of a parabola. 14k views 8 years ago math 125, practice problems for exam#4.