Previous Material
Equations of lines
Correlations
Meanings?
Calculator
100
Write an example of a function. (Draw a table)
Answers may vary
100
Slope = 2 Y intercept = 3
y=2x + 3
100
Draw a picture of a possitive correlation
Dots going up
100
Mandy is walking 10 miles per hour towards her friends house. She was already 5 miles from home. What would be the slope of this situation and what would be the meaning of the slope?
10 / She walks at a rate of 10 MPH
100
What do you go to in your calculator to find the L1 and L2 lists?
Stat then Edit (Enter)
200
Given f(x) = 2x + 1, find the range value if the domain value is 4.
9
200
Slope= 1/2 Y intercept (0, -2)
y=1/2x - 2
200
Draw a picture of a negative correlation
dots going down
200
Mandy is walking 10 miles per hour towards her friends house. She was already 5 miles from home. What would be the y intercept of this situation and what would be the meaning of the y intercept?
(0,5) She started 5 miles from home.
200
What do you have to push on your calculator to turn on your scatterplot?
2nd y=
300
Given f(x) = -2x + 1, find the domain value if the range value is 3.
-1
300
Slope = 3 Point = (2, -4)
y=3x-10
300
Draw a picture of No correlation
Dots going everywhere
300
Joane is paying for cable TV. The company charges $25 per month plus a one time setup fee of $55. What would be the slope of the situation and what would it mean?
$25/ Cost per month
300
What are the steps for finding the equation of the trend line on your calculator?
Stat, Edit, Type in numbers, Stat, CALC, 4 (LinReg), enter.
400
If the domain of the function f(x) = 2x + 3 is restricted to -2< x < 2, what is the range of the function?
-1
400
Points (-2, 5) (1, -1)
y= -2x + 1
400
Jody collected data on the number of homeworks each student turned in as compared to thier test scores. This was her results. (1, 30) (2, 45) (10, 95) (7, 80) (4, 70) (5, 50) (2, 45) (0, 15) (9, 90) (6, 65). What type of correlations is this?
Possitive
400
Joane is paying for cable TV. The company charges $25 per month plus a one time setup fee of $55. What would be the y intercept of the situation and what would it mean?
(0,55) The setup fee
400
How do you determine what to set your window as in order to see the scatterplot on the calculator?
X min should be smaller than the smallest x value X max should be bigger than the biggest x value Y min should be smaller than the smallest y value Y max should be bigger than the biggest y value.
500
A plumber charges $30 per hour, plus a $60 charge for a service call. Write an equation to represent the situation.
y=30x + 60
500
Slope = undefined y intercpet = (-1, 3)
x = -1
500
Describe a situation that would be concidered a negative correlation.
Answers may vary
500
Bobby is running a race. He starts 10 miles from the finish line and is traveling at a rate of 5 MPH towards the finsh line. What would be the slope of the situation and what does it mean?
-5 / Getting 5 miles closer to the finish line every hour.
500
How can you use your calculator to find the x-intercepts or zeros of a function?
Type in the equation into y1= then type in 0 into y2= hit graph then hit 2nd trace 5 Enter Enter Enter.
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