Provide an appropriate response.Why is it not possible to choose h and k, neither zero, so the parabola 
has its vertex at the origin?
What will be an ideal response?
The only way a parabola can have its vertex on the x-axis is if 
and the only way a parabola can have its vertex on the 
is if 
So the only way a parabola can have its vertex at the origin is if both h and k are zero.
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Simplify the complex fraction.
A. 
B. 
C. 
D. 
Provide an appropriate response.What is wrong with the following? 
= 
= 4x
What will be an ideal response?
Find the set of possible rational zeros given the function.f(x) = 2x3 + 6x2 + 7x - 8
A. 
B. {±1, ±2, ±4}
C. {±1, ±2, ±4, ±8}
D. 
Determine the domain and range. Then state whether the relation is a function.
A. Domain: [0, ?) Range:[6, ?) Function B. Domain: (-?, 6] Range: (-?, 1] Function C. Domain: [0, 6] Range: [1, 7] Not a function D. Domain: [1, 7] Range: [0, 6] Not a function