2. 2. Simplify: -3(5x - 3) -2(6x - 6)
3. Find the length & width: x P = 68
2x + 10
4. Find the length
and width
5. Solve for b: A = ½b • h

3. Vocabulary:
1. Discreet Data: Data that has a limited number of
values, with space between each value. Usually whole
numbers.
2. Continuous Data: Data with values that vary
continuously over the graph. Data that is unbroken by
space between values.
Examples:
1. The number of suitcases lost by an airline:
2. The growth of corn plants:
3. The number of ears of corn harvested.

4. function
Not a function
Not a function
function
……….

6. 1a. Domain: {-4, -2, 3, 4} Range: {-2, 2, 1}
1b. Domain: {0, 1, 7} Range: {-6, 2, -4, 4}
2a. 2b.
Function Not a Function
3a. 3b.
-4 0
-1 -6
-2 1 Not a
2 2
3 7 Function
1 -4
4 4

7. Function Rules f(x)..g(x)..h(x)

8. Function Rules f(x)..g(x)..h(x)
……….

9. y = -3x + 2
y = -3(-1) + 2
y=3+2
y=5

10. H P C
e e o
i o s
g p t
h l
t e
S 4 H 5 S 6
p e p
e i e
e g e
d h d
t
A. Cost of a laptop, past 10 years B. Drag racing before hitting tree
C. World Population, last 700 years D. Person's height during lifetime
E. 3-point shot F. Running up, then down a hill

11. The x variable is given on each graph. You will add the y
variable before watching the video. Please number your
graphs, matching the order of the video watched.

12. An easy one to begin:

13. Follow Closely:

17. y = 5x -7 y = 5x -7 y = 5x - 7
y = 5(-3) - 7 y= 5(-2) -7 y = 5(4) - 7
y = -15 - 7 y= -10 - 7 y= 20 - 7
y= -22 y= -17 y= 13
……….

18. Practice
Steps
1. Sub in each domain value in one @ a time.
2. Solve for y in each
3. List y values in braces.

19. 1. y = 3x + 1 y = 3x + 1 y = 3x + 1
y = 3(-4) + 1 y = 3(0) + 1 y = 3(2) + 1
y = -12 + 1 y=0+1 y=6+1
y = -11 y=1 y=7
Ans. { -11, 1, 7}
2. y = -2x + 3 y = -2x + 3 y = -2x + 3
y = -2(-5) + 3 y = -2(-2) + 3 y = -2(6) + 3
y = 10 + 3 y = 4 +3 y = -12 +3
y = 13 y=7 y = -9

20. Using the Vertical Line Test
Use the vertical line test to check
if the relation is a function only if
the relation is already graphed.
1. Hold a straightedge (pen, ruler,
etc) vertical to your graph.
2. Drag the straightedge from left
to right on the graph.
3. If the straightedge intersects
the graph once in each spot ,
then it is a function.
4. If the straightedge intersects the
graph more than once in any
spot, it is not a function.
A function!
……….