Algebra Performance Final ll

Quadratic Functions

100

f(x)=(x-6)(x+2)

What is the X-intercepts of this equation ?

(6,0), (-2,0)

200

f(x)=2(x-3)(x-1)

What is the vertex of this equation ?

Vertex: (-2,2)

300

The Maximum is the ____ point of the parabola. The Minimum is the _____ point of the parabola. 

Highest;Lowest

400

5r²-13r+8=0

8/5,1

500

f(x)=x²-3 ; over (0,2)

2

Exponential Functions

100

(-1,10)(0,20)(1,40)(2,80)

Would this be known as an Exponential Function ?

Yes. 

200

8^{1 -3x}=64^x

1/5

300

How many x-values do you need to come up with to graph an Exponential function ?

a least 4 x-vaules.

400

25²ⁿ =125

3/4

500

(-3,5)(-2,10)(-1,15)(0,20)

Would this be considered as an Exponential Function ?

No

Comparing Linear v Exponential

100

y=400(2)x

Find y when x =3

y=3200

200

Dr. Bowman has $315 and wants to increase it by 10% each month.

What is the function of this situation ?

y=315(1.10)^x

300

In a decreasing linear, is the slope positive or negative?

Negative.

400

Zoe owns 35 books & collects 5 more each week. This would be considered of Linear or Exponential ?

Linear.

500

y=mx+b is the formula of Linear or Exponential Functions ?

Linear.

Comparing Linear, Exponential & Quadratic Functions

100

Sam's bank account starts at $20, his account doubles each week. What is an equation that represents this situation ?

20(2)^x

200

Alex has $200 and plans to increase his balance by 25% each month. What equation represents this ?

y=200(1.25)^x

300

Ruby gets $500 from her recent paycheck. She ends up cutting half each day. Create an equation that represents this.

500(1/2)^x

400

Jim has $74, he buys DVD rentals everyday that cost $1. What equation represents this scenario ?

y= -x+ 74

500

Sarah has $22.6 in the bank. Her gym membership takes $8 from account each day. What equation represents this problem ?

y=-8+22.6

Bivariate Data

100

The top row of a Scattered Plot or the left column are considered the ____ values.

x-values.

200

As x increases, y increases. What correlation is this ?

Positive Correlation

300

There are a total of 239 Mini Van owners.

What type of frequency was stated in this problem ?

Marginal Frequency

400

Male Sports Car Owners: 78

Totals ; 300

What is the relative frequency of this situation ?

0.26

500

You should properly divide the ____ frequency by the ____ frequency.

joint ; marginal