Question

Is knowing the coordinates of the vertex of a parabola enough to determine the domain and range?



a.


No: we would have no information about the domain.

c.


Yes: if the vertex is at (m,n), then the domain is all reals and the range is y ≤ n.



b.

No: we would need to know if the vertex is a minimum or a maximum.

d.


Yes: if the vertex is at (m,n), then the domain is all reals and the range is y ≥ n.

Answer 1

@Blank 

Answer 2

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Answer 3

It's B. The vertex can either be a maximum, which is the highest point. Or a minimum, the lowest point. The problem doesn't tell us which the vertex is.
The location of the vertex can tell us the range of the parabola.

Answer 4

Use a graphing calculator to approximate the vertex of the graph of the parabola defined by the following equation.

y=2x-x+6

.


( 0.25, 6.125)


c.


(-0.25, 5.875)




b.


( 0.25, 5.875)


d.


( 0.25, 6)

Answer 5

thank you! can you help me with a few more questions? @iPwnBunnies