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Home > CCA2 > Chapter 7 > Lesson 7.1.1 > Problem 7-7
7-7.
Find the equation of the parabola that passes through the points
There are three ways to approach this problem.
Use the x-intercepts.
Notice that
What are the factors?
The equation is
Substitute
Use the vertex.
Notice that since
Write the equation in vertex form.
The equation is
Substitute one of the
x-intercepts into the equation and solve for
Standard form.
Substitute the three points into the equation
Since you know what c is you can substitute it into all of the equations and solve a system of two equations in two variables.