If K is a constant, which of the following equations best describes the parabola?
Attached Figure / Diagram
A
y = kx2
B
x = y2 - k
C
y = k - x2
D
x2 = y2 - k
E
y = (k - x)2
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
The parabola is best described by the equation x = y2 - k because all other equations do not give the equation of the parabola in this position. C for example is the equation of a hyperbola facing downwards. D is the equation of a hyperbola A and E are equations of parabola facing upwards
Source: Myschool Past Questions Archive (Record #32761)