Question

Use the graph to determine the vertex point of the quadratic function. Is the vertex a

maximum or a minimum?
A) Vertex (2,1), minimum
B) Vertex (1,2), maximum
C) Vertex (2,1), maximum
D) Vertex (1,2), minimum

Answer 1

B) Vertex (1,2), maximum

Explanation:

First, determine if the graph has a maximum or a minimum value. Since the graph opens downwards, it has a maximum value.

The maximum is the point that has the greatest y value. We can see that the greatest y value is at
`y=2`. Going down two units from that spot, we can see that the x value is at
`x=1`. We can plug those into the vertex form,
`(x,y)`. By plugging in we get the point
`(1,2)`.