Homework Due 1/10

Front

What does a correlation coefficient of r = 0.90 indicate?

Back

Positive, strong correlation.

Front

Which of the following sets of values represents a function? (6,-5) (7,-3) (8,-1) (9,1) or (2,-2) (5,9) (5,-7) (1,4)?

Back

(6,-5) (7,-3) (8,-1) (9,1) is a function.

Front

Solve the inequality: -3(x + 2) < 21

Back

x > -9.

Front

Is the following table a function? (3,4) (4,-3) (3,8)

Back

Not a Function.

Front

Solve for x: 10x + 9 = 4x - 9

Back

x = -3.

Front

What is a function?

Back

A relation where each input has exactly one output.

Front

What is the definition of a correlation coefficient?

Back

A statistical measure that describes the strength and direction of a relationship between two variables.

Front

What does it mean if a function is not a function?

Back

It means that at least one input corresponds to multiple outputs.

Front

How do you determine if a set of ordered pairs is a function?

Back

Check if any x-value is repeated with different y-values.

Front

What is the solution to the equation 2x + 3 = 11?

Back

x = 4.