Review: 3C-Graph & Identify Key Features of Linear Functions

Front

What is the slope in the equation y = 30x + 50?

Back

The slope is 30.

Front

In the expression 1 + 0.5x, what does the variable x represent?

Back

The variable x represents the number of ounces of lemonade poured.

Front

Fill in the blank: y = 5x - 4 means ___________ 5 and x and subtract 4 to get y.

Back

multiply

Front

What is the x-intercept of the equation -3x + 5y = -15?

Back

The x-intercept is (-2, 0).

Front

What does the y-intercept represent in a linear function?

Back

The y-intercept represents the value of y when x = 0.

Front

How do you find the slope from two points (x1, y1) and (x2, y2)?

Back

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

Front

What is the standard form of a linear equation?

Back

The standard form is Ax + By = C, where A, B, and C are integers.

Front

What does it mean if a linear function has a negative slope?

Back

It means that as x increases, y decreases.

Front

What is the formula for the slope-intercept form of a linear equation?

Back

The slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

What is the significance of the point (0, b) in a linear equation?

Back

It is the y-intercept of the line.