Test 7 Review Dec. 2024

Front

What is the graph for the inequality y ≥ -3?

Back

The graph includes all points above the line y = -3, including the line itself.

Front

What letter is used to represent the correlation coefficient?

Back

r

Front

Select the correct graph for the inequality y ≤ -¾x - 1.

Back

The graph includes all points below the line y = -¾x - 1, including the line itself.

Front

What is the definition of range in a function?

Back

Range is all possible y-values that a function can output.

Front

Given the equation C(t) = -3t + 150, predict the number of coats sold when the average temperature is 20°.

Back

C(20) = -3(20) + 150 = 90.

Front

What does the slope of a line represent in a linear equation?

Back

The slope represents the rate of change of y with respect to x.

Front

What is the y-intercept in the equation y = mx + b?

Back

The y-intercept is the value of y when x = 0, represented by b.

Front

How do you determine if a relation is a function?

Back

A relation is a function if each input (x-value) has exactly one output (y-value).

Front

What does it mean for two variables to have a positive correlation?

Back

A positive correlation means that as one variable increases, the other variable also increases.

Front

What is the formula for finding the slope between two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1).