y=2+cx+d the turning point is (3,7) work out the values of c and d.

Question

y=²+cx+d the turning point is (3,7) work out the values of c and d

Answer 1

I think that you have omitted the variable x in the expression for y (first term...all we see is the exponent 2, with no base!)

 

If this really is a quadratic, then the turning point is the vertex; we have a formula for x coordinate of vertex:

x_vertex =-b/(2a).  NB: a = 1, b = c.

 

Apparently this equals 3, and when x=3, y = 7.

 

Does this give you two equations in two unknowns (c & d).. SOLVABLE!  Go to it.