Chapter 8.5, Problem 30ES

(a)

To determine

Whether the parabola $f\left(x\right)=x^2+4x$ is open upwards or open downwards.

(b)

To determine

To calculate: The y-intercept of the parabola $f\left(x\right)=x^2+4x$.

(c)

To determine

To calculate: The vertex of the parabola $f\left(x\right)=x^2+4x$.

(d)

To determine

To calculate: The equation of axis of symmetry of the parabola $f\left(x\right)=x^2+4x$.

(e)

To determine

To calculate: The x-intercepts of the parabola $f\left(x\right)=x^2+4x$.

(f)

To determine

To graph: The equation of parabola $f\left(x\right)=x^2+4x$.