Scatter Plots & Systems Word Problems (Unit 4 Review)

Front

What type of correlation does a scatter plot show when the values increase together?

Back

Positive correlation

Tags

CCSS.HSF-LE.A.1B

Front

What type of correlation does a scatter plot show when one value increases while the other decreases?

Back

Negative correlation

Front

What does it mean if a scatter plot shows no correlation?

Back

There is no relationship between the two variables.

Tags

CCSS.HSF-LE.A.1B

Front

What is a line of best fit in a scatter plot?

Back

A straight line that best represents the data points on the scatter plot.

Tags

CCSS.8.EE.B.5

Front

How do you determine the equation of a line of best fit?

Back

By using statistical methods such as least squares regression.

Tags

CCSS.HSF-LE.A.1B

Front

In a system of equations, what does it mean if the lines intersect?

Back

The system has one unique solution.

Tags

CCSS.8.EE.C.8A

Front

In a system of equations, what does it mean if the lines are parallel?

Back

The system has no solution.

Tags

CCSS.8.EE.C.8A

Front

In a system of equations, what does it mean if the lines coincide?

Back

The system has infinitely many solutions.

Tags

CCSS.8.EE.C.8A

Front

If Joe bought 10 cups of coffee and 5 doughnuts for $16.50, what equation represents this situation?

Back

10c + 5d = 16.50

Tags

CCSS.HSA.CED.A.3

Front

If Joe bought 5 cups of coffee and 10 doughnuts for $14.25, what equation represents this situation?

Back

5c + 10d = 14.25

Tags

CCSS.HSA.CED.A.3