Unit D Functions and Lines Test Review

Front

What is a constant function?

Back

A constant function is a function that does not change its value, regardless of the input. It can be represented as f(x) = c, where c is a constant.

Front

What does the equation y = mx + b represent?

Back

This is the slope-intercept form of a linear equation, where m is the slope of the line and b is the y-intercept.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

The slope (m) is calculated as m = (y2 - y1) / (x2 - x1).

Tags

CCSS.8.EE.B.5

Front

What is a piecewise function?

Back

A piecewise function is a function that is defined by different expressions for different intervals of the input.

Tags

CCSS.HSF-IF.C.7B

Front

What is the y-intercept of the line represented by the equation y = 2x + 3?

Back

The y-intercept is the point where the line crosses the y-axis, which is (0, 3) in this case.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

What does it mean for a function to be linear?

Back

A linear function is a function that graphs to a straight line and can be expressed in the form y = mx + b.

Tags

CCSS.8.F.A.3

Front

What is causation?

Back

Causation refers to a relationship where one event (the cause) directly affects another event (the effect).

Tags

CCSS.RI.4.3

CCSS.RI.5.3

CCSS.RI.6.3

CCSS.RI.7.3

CCSS.RI.8.3

Front

What is correlation?

Back

Correlation is a statistical measure that describes the extent to which two variables change together, but it does not imply causation.

Tags

CCSS.HSS.ID.C.9

Front

How do you evaluate a piecewise function at a specific point?

Back

To evaluate a piecewise function, determine which interval the input falls into and use the corresponding expression.

Tags

CCSS.HSF.IF.A.2

Front

What is the formula for calculating total earnings based on hourly rates?

Back

Total earnings = (Hourly rate for first hours * Number of first hours) + (Hourly rate for additional hours * Number of additional hours).