Which is the equation of a parabola with a directrix at y = −3 and a focus at (5, 3)?

y = one twelfth(x − 5)2
y = −one twelfth(x − 5)2
y = one twelfth(x + 5)2
y = −one twelfth(x + 5)2

answer: 7270

step-by-step explanation:

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.