## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

The graph of $f(x)=a(x-h)^{2}$ has the same shape as the graph of $y=ax^{2}.$ If $h$ is positive, the graph of $y=ax^{2}$ is shifted $h$ units to the right. If $h$ is negative, the graph of $y=ax^{2}$ is shifted $|h|$ units to the left. The vertex is $(h, 0)$ , and the axis of symmetry is $x=h.$ --- $a=+1$, opens upward. The vertex is $(-4,0)$. The axis of symmetry is $x=-4.$ Make a table of function values and plot the points, and join with a smooth curve.