# Write an equation of the parabola in vertex form

The complete factoring is: Ignore the factor of 2, since 2 can never be 0. Multiply it all to together to show that it works! Parabolas have two equation forms — standard and vertex. With just two of the parabola's points, its vertex and one other, you can find a parabolic equation's vertex and standard forms and write the parabola algebraically. Substitute in Coordinates for the Vertex Substitute the vertex's coordinates for h and k in the vertex form.

For an example, let the vertex be 2, 3. Substitute in Coordinates for the Point Substitute the point's coordinates for x and y in the equation.

In this example, let the point be 3, 8. Sciencing Video Vault Solve for a Solve the equation for a. Substitute a Substitute the value of a into the equation from Step 1. Convert to Standard Form Square the expression inside the parentheses, multiply the terms by a's value and combine like terms to convert the equation to standard form.

Parabolas About the Author Chance E. Gartneer began writing professionally in working in conjunction with FEMA. He has the unofficial record for the most undergraduate hours at the University of Texas at Austin.

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Find helpful customer reviews and review ratings for Scientific Calculator CANON FSGA at ph-vs.com Read honest and unbiased product reviews from our users. Sal rewrites the equation y=-5x^x+15 in vertex form (by completing the square) in order to identify the vertex of the corresponding parabola. The vertex of a quadratic equation or parabola is the highest or lowest point of that equation. It lies on the plane of symmetry of the entire parabola as well; whatever lies on the left of the parabola is a complete mirror image of whatever is on the right.

## Plot parabola with start, end and vertex points - MATLAB Answers - MATLAB Central

If you want to find the vertex of a. So I have three points and I would like matlab to plot them as a parabola. The points represent the path of a balls projectile motion and I know the start (0,0), end (, 0) and high point (, 0,73) of the parabola. The vertex of a quadratic equation is the highest or lowest point on its graph, which is known as a parabola.

Ensure that your equation is written in standard form. The standard form of a quadratic equation is y = ax^2 + bx + c, where "x" and "y" are variables and "a," "b" and "c" are integers.