Question 210380
Your solutions to the quadratic are correct.
What the problem is further asking is that you choose several (two or three) values of x and solve the quadratic for each of these to find the corresponding y-value (that's the f(x) value) and plot the resulting points on coordinate graph paper then draw the curve.
Here's what the graph should look like:
{{{graph(400,400,-3,3,-5,5,7x^2-2)}}}
Here's an example:
Choose x = 0.
{{{y = 7(0)^2-2}}}
{{{y = -2}}}
One of the points could be (0, -2).
Find a few more and plot them.