Factoring / Difference of Squares
Completing the Square / Discriminant (Quad Formula)
Comparing and Regression Models
Piecewise and Square Root Functions
Statistics and Data Analysis
100
Which is the correct FULLY FACTORED form for
x2 - 25?
A. (x + 5)(x + 5)
B. (x + 5)(x - 5)
C. (x - 5)(x - 5)
D. Not factorable.
B. (x + 5)(x - 5)
Try multiplying with the area model.
100
Which of the following is the correct vertex form for
x2 + 6x + 5 ?
A. (x + 3)2 + 14
B. (x + 3)2 - 14
C. (x + 3)2 + 4
D. (x + 3)2 - 4
D. (x + 3)2 - 4
x2 + 6x + 9 5 - 9
100
True or False: Both functions are linear and decreasing.
False, both are decreasing but 1 is linear and 2 is exponential.
100
Evaluate f(2)
Evaluate f(2) = 3
100
How many people were surveyed?
20 people (add frequencies)
200
Which is the correct FULLY FACTORED form for
x2 - 16?
A. (x + 8)(x - 8)
B. (x - 8)(x - 8)
C. (x + 4)(x - 4)
D. (x - 4)(x - 4)
C. (x + 4)(x - 4)
Try the area model / multiplying to check.
200
Determine the discriminant for x2 - 2x - 10 and
how many solutions it has.
- Two Real Solutions
- One Real Solutions
- NO real (two non-real)
-36, No real (two nonreal)
200
True or False: Function 2 is exponential because it increases by equal factors.
True, factors means multiply.
200
True or False:
Domain:
x>=1
Range:
y >=-2
True, both are increasing.
200
What is the shape? Symmetric or Skew ____?
a) Skew Right
b) Skew Left
c) Uniform
d) Symmetric
300
Which is the correct FULLY FACTORED form for
2x2 - 10x - 72?
A.(2x + 8)(x - 9)
B. (2x - 18)(x + 4)
C. 2(x + 9)(x - 4)
D. 2(x - 9)(x + 4)
D. 2(x - 9)(x + 4)
GCF of 2 must factor out first.
300
Complete the square to find vertex form for the following:
x2 - 18x + 70
(x - 9)2 - 11
x2 - 18x + 81 + 70 - 81
300
False, horses is 5 and cows is 2.
300
Explain the following:
- Reflected? (yes or no)
- Right/Left
- Up/Down
- REFLECTED (a = -1)
- Left 2
- Up 1
300
You scored 90, 75, 80, and x in your marking periods.
What do you need "x" to be for your average for the year to be an 85?
You need a 95.
Total / 4 = 85
400
Which is the correct FULLY FACTORED form for
3x2 + 7x + 2?
A. (3x + 1)(x + 2)
B. (3x + 2)(x + 1)
C. 3(x + 1)(x + 2)
D. 3(x + 2)(x + 7)
A. (3x + 1)(x + 2)
Multiply using area model to prove it.
400
Determine the discriminant for x2 - 8x = -10 and
how many solutions it has.
- Two Real Solutions
- One Real Solutions
- NO real (two-nonreal)
Then find the solution(s) if applicable.
24, two real solutions
Rewrite: x2 - 8x +10 = 0
Solutions:
(8+-sqrt(24))/2
400
True or False: Function 3 is modeled by the equation: y = 50x + 0.75
False: Function 3 has a starting of 50, slope / rate of 0.75
y = 0.75x + 50
400
The graph p(x) represents the price per shirt of buying shirts in bulk.
What does p(40) mean?
40 shirts will be priced at $15 per shirt.
400
If a random 7th grader is selected, what is the probability they chose strawberry?
12%
500
Factor 100x2 - 1
Answer: (10x + 1)(10x - 1)
500
Find the solution(s) for the following
2x2 - 9x - 5?
what method did you use?
- Factor?
- Complete the square and square root?
- Quad Formula?
-1/2 (or -0.5) and 5
500
True or False: h(1) > g(1)
True
h(1) = 7
g(1) = 4
500
True or False:
The graph is y = 3 from
x<=1
False:
Graph y = x2 when
x<=1
Graph y = 3 when
1 < x <=2
500
Which center is most CONSISTENT?
Which one has the highest nap times on AVERAGE?
Which center is most CONSISTENT?
Center D is most consistent - smallest range
Which one has the highest nap times on AVERAGE?
Center B has highest average - median