Week 1
12 - [4 + (9-3) / 3] x 2
0
Solve the Equation
10 - x = 15
-5
10( k - 9 )=- 10
k = 8
In y = mx + b, what does m and b represent?
m = slope
b = y-intercept
The following set is a function: What is the Domain and Range?
{(-1,1), (3,4), (-9,15), (4,6)}
Domain: -1, 3, -9, 4
Range: 1, 4, 15, 6
3 + 2 x (4 - 1)
9
Solve the Equation
3x + 2 = 26
x = 8
10 - 6v = -104
x = 19
Explain the difference between a positive correlation
and negative correlation.
Positive correlations: x and y are increasing
Negative correlations: x increase, y decreases
Find the range of the set:
{(1,5), (-2,6), (0,-4), (11, -20)}
Range: 5, 6, -4, -20
20
Combine like terms
10x + 8 - 4x -9
6x - 1
A community organization spent $60 on administrative costs and $15 per bus pass to help families in need. If the total cost was $315, how many bus passes were distributed?
15x+60=315
x=17 bus bases were distributed
There are three main types of correlation:
_________________________: x & y both increase
_________________________: x increase, y decreases
_________________________: there is no relationship between x & y
Positive Correlation
Negative Correlation
No Correlation
Find the domain and range of the linear function
y= -3x+10
All real numbers
(5 + 3) x 2 - 4
12
Use distributive property
9 ( 8 - 6x)
72 - 54x
At a Breakthrough fundraising event, it cost five
dollars per table plus a twenty dollar rental fee.
Breakthrough spent a total of fifty-five dollars. How
many tables did Breakthrough rent? Create an
equation for this problem and solve.
5x + 20 = 55
x = 7 tables
What types of lines are these:
x = 2
x = (− 3)
x = 8
x = (− 7)
Vertical Lines
A Line of Best Fit with a negative slope implies that there is _____ correlation.
A positive correlation
A negative correlation
No correlation
A negative correlation
8 x [ 5 + 2 x (9 - 4)] / 2
60
- 4x = - 36
x = 9
A voter awareness campaign printed flyers at $0.50 per flyer. They also spent $40 on social media ads. If the total cost was $190, how many flyers did they print?
0.50x+40=190
x=300 flyers were printed
y = 5
y = (− 2)
y = 9
y = (− 6)
Horizontal Lines
What is the domain and range of the set below?
{ (-2,1), (0, 4), (5, 7), (8, 12), (-9, -3) }
Domain: -2, 0, 5, 8, -9
Range: 2, 4, 7, 12, -3