The Vertex Formula YouTube
How To Find X Intercept From Vertex Form. If a is positive, the parabola opens up. Look at the coefficient of the x^2 term.
Look at the coefficient of the x^2 term. If a is negative, then the parabola opens down. If a is positive, the parabola opens up.
If a is positive, the parabola opens up. If a is positive, the parabola opens up. Look at the coefficient of the x^2 term. If a is negative, then the parabola opens down.
