Topic 8 Review

Vocab

100

What shape is the graph of the quadratic function? 

Parabola

200

What is the maximum or the minimum of the parabola called?

Vertex

300

The X in the vertex is also called what? 

Axis of Symmetry 

8-1

100

What is the value of "a" when the parabola is facing down? 

-a 

200

Is the parabola wider or narrower when the value of a is greater than 1? 

Narrower 

300

Is the graph of the following equation facing up or down? Wide or narrow?

f(x)=-.3x²

Facing down

Wide

8-2

100

Does the value of k move the graph of the parent function horizontally or vertically? 

Vertically

200

If the equation of the quadratic function is

f(x)=(x-4)²+2 

how is the graph shifted? 

The parabola will shift right 4 and up 2

300

What is the Vertex, AOS and shape of the graph of the following equation? 

f(x) =0.5(x - 2)² - 1

Vertex: (2,-1)

AOS: x=2

Facing up, Wider

8-3

100

What is the y-intercept of
f(x) = 7x² + 2x - 1 ?

(0,-1)

200

What is the equation used to find the x in the vertex from the equation in standard form? 

-b/2a

300

Convert the following equation to vertex form

f(x)=-0.5(x-2)²+8

f(x)=-0.5x²+2x+6

8-5

100

If the first differences in a table are the same, then the function that best models the data is...?

A linear function 

200

The equation of f(x)=1.25^x is what type of function?

Exponential 

300

Which of the 3 functions (linear, quadratic, or exponential) will always exceed the other two? 

Exponential