I was assigned an achievement check a few days back and it is due soon.
Question: Find k such that the graph of y=9x^2 + 3kx + k:
a) intersects the x-axis in one point only
b) intersects the x-axis in two points
c) does not intersect the x-asix
I am unable to figure out how to solve it. Can someone explain to me how to do this please?