What is your constant of variation in the equation y=2x?
What is k=2
100
A line pointing upward has what type of slope?
What is positive.
100
What do you call the horizontal axis of the graph?
What is x-axis
200
Match the graphs on slide 5 with the situation they describe.
What is graph 1 = 3 graph 2 =1 graph 3 = 2
200
What is the mean of 2, 7, 1, 4, 6?
What is 4
200
Is the equation 3y=6x a direct variation? If so, find k.
What is Yes. k=2
200
Tell whether the graph on slide 2 has a constant or variable rate of change. If constant, find the slope.
What is variable
200
What does "k" stand for in direct variation?
What is constant of variation
300
Decide if this sampling method is biased and explain.
Ms. Beal wants to know if student's in college like math. She hands out 40 surveys to students who are in her classes. 97% like math.
What is Biased. Ms. Beal is in all math classes so people probably like math.
300
What is the mode of 1, 17, 8, 8, 12, 4, 5, 5?
What is 8 and 5
300
What two things does a graph need to look like in order to be a direct variation?
What is 1) be a straight line 2) go through the origin
300
Tell whether the graph on slide 1 is constant or variable. If constant, find the slope.
What is constant. slope=2
300
What is the rise over the run of a straight line?
What is slope
400
A mathematician took a random sample of 50 triangles and found that 3 of them were right triangles. He then estimates that 270 out of his 2,500 triangles are right triangles. Do you agree?
What is No. 3/50=0.06 270/2,500=0.108
400
What is the median AND the range of the data?
7, 2, 3, 4, 9, 11, 1, 3, 5?
What is median= 4 and range = 10
400
Tell whether the table on graph 4 is direct variation. If so, write the direct variation equation.
What is Yes. y=1/7x
400
What is the slope of the graph on slide 3?
What is -1/2
400
Which central tendency is found by adding up all your data points and dividing by the number of items in your data set?
What is mean/average
500
Ms. Beal drove 35 miles from home to pick up Ms. Pugh. They then drove 5 miles to Caribou and got coffee. After coffee, they drove another 1 mile to school. Draw a graph to show their distance from Ms. Beal's home compared to time. How many miles did Ms. Beal drive?
What is 41 miles.
500
Find the mean, median, mode, range AND outlier of the data.
1, 14, 15, 15, 16, 16, 16, 18, 20, 21.
What is mean = 15.2 median= 16 mode= 16 range = 20 outlier = 1
500
Is the equation y+2=3x a direct variation? If so, find the constant of variation.
What is no.
500
Graph the line that goes through the point (-3, -4) and has a slope of 1/2
What is see Ms. Beal's graph
500
What do you call information that does not fairly represent the population?