I’m horrible at graphing it says to graph a line with the slope 1/3 passing through the point (3,1)

Place a point on the coordinates (3,1). Then from the point go up 1 and to the right 3 for coordinates to your next point (6, 2). Do this again for another point at (9, 3).

Go back to the point (3,1) and do the opposite; go down 1, left 3. This gets you to (0,0). Do it again to get (-1, 3).

Now draw a straight line through all of these dots.

Ithink the answer is d. not sure but don’t answer it.

The vertex of the quadratic function is (1.5, -.75)