Correlation Types
Vocabulary
Slope
Formulas
Word Problems
100
What type of correlation is the following: As x increases, y decreases?
Negative
100
the steepness and direction of a line
Slope
100
What is the slope of this Line of Best Fit?
2/3
100
What is the Formula for Slope Intercept Form?
Y=MX+B
100
A construction crew is lengthening a road that originally measured 54 miles. The crew is adding one mile to the road each day. Let L be the length (in miles) after D days of construction. Write an equation relating L to D.
L=54+D
200
What type of correlation is the following: As x increases, y also increases?
Positive
200
a graph in which the values of two variables are plotted along two axes, the pattern of the resulting points revealing any correlation present
Scatter Plot
200
What is the formula for Slope?
(Y2-Y1)/(X2-X1)
200
Find the slope of the line passing through the points (2, 5) and (−8, 4)
-3/2
200
Keisha has 21 cars available to rent.
Let C be the number of cars she would have left after renting R of them. Write an equation relating C to R.
C=21-R
300
What type of correlation is the following: there is no relationship between x and y?
None
300
a variable that stands alone and does not rely on the value of any other variable to determine its value
Independent Variable
300
What is the way we remember slope? Hint: 3 Words
Rise over run
300
What is the Formula for Standard Form?
Ax + By = C
300
A construction crew is lengthening a road. The road started with a length of 56 miles, and the crew is adding 2 miles to the road each day. Let L represent the total length of the road (in miles), and let D represent the number of days the crew has worked. Write an equation relating L to D. Then use this equation to find the total length of the road after the crew has worked 38 days.
Equation: L=56+2D
Total length: 132miles
400
What type of correlation is this?
Negative
400
the point where a line or curve crosses the y-axis on a graph
Y-Intercept
400
What is the Slope of this Line of Best Fit?
3/2
400
What is the Formula for Point-Slope Form?
400
Trey needs to read 3 novels each month. Let N be the number of novels Trey needs to read in M months.
Write an equation relating N to M.
N=3M
500
What type of correlation is this?
No Correlation
500
a straight line drawn on a scatter plot that best represents the overall trend of the data points, showing the relationship between variables by minimizing the distance between the line and the data points
Line of Best Fit
500
What is the slope of the following points?
(3,5) and (9,6)
1/6
500
What is the slope of this equation?
y-6=1/2(x+4)
1/2
500
Kira is a software saleswoman. Her base salary is $2300, and she makes an additional $50 for every copy of English is Fun she sells.
Let P represent her total pay (in dollars), and let N represent the number of copies of English is Fun she sells. Write an equation relating P to N. Then use this equation to find her total pay if she sells 27 copies of English is Fun.
Equation: P=2300+50N
Total: $3650