For each of the following quadratics:
Locate the turning point or vertex.
State whether the vertex is a minimum turning point or a maximum turning point.
a. y=x2−4x+2
b. y=x2+2x−3
c. y=2x2+4
d. y=−3x2+1
e. y=2x2+8x−7
f. y=−x2−4x−9
g. y=2x2+6x−1
h. y=2x2−10x+3
i. y=−21x2+x−5
j. y=41x2−7x+6