The vertex of the functions graph is given. find c. y=2x^2-6x+c; (3/2, 0.5)

You would best do this by completing the square on the quadratic and subbing in the vertex they give you, like this:

Since the y coordinate of the vertex is 1/2 and we need to solve for c, set the equal to 1/2 and solve for c, which is the whole point of what we are doing, right?
and
and c = 4. So that's our answer!

3cm and 6 and 9 cm that a possibility of that question