8. The graph shows a relationship between two quantities. 2000
PLAN:
1800
1600
1400
Identifsit where it
crosses the y-axis
Calculate the rate
1200
1000
800
600
Write heation of the le
400
y=1/2x
200
y=mx +6
O
Which equation best represents the relationship between the variables?
a. Y = -1600x + 200
b. y = -200x + 100
c. y = 200x + 2000
d. y = -200x +1600

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.

The price of a dozen eggs was $1.63. suppose the price increases m dollars per dozen and then the price decreases $0.12 per dozen. which expression represents the current price of eggs after the two price changes?