Math 8 Functions Test Review

Front

What is an independent variable?

Back

An independent variable is a variable that represents the input or cause in a function. It is the variable that is manipulated to observe its effect on the dependent variable.

Front

What is a dependent variable?

Back

A dependent variable is a variable that represents the output or effect in a function. It depends on the value of the independent variable.

Front

What is the slope of a line?

Back

The slope of a line is a measure of its steepness, calculated as the change in the y-coordinate divided by the change in the x-coordinate (rise over run).

Front

What is the y-intercept of a line?

Back

The y-intercept is the point where the line crosses the y-axis, represented as the value of y when x = 0.

Front

What is the equation of a linear function in slope-intercept form?

Back

Front

How do you determine the slope from two points?

Back

Front

What does the term 'function' mean in mathematics?

Back

A function is a relation that assigns exactly one output (dependent variable) for each input (independent variable).

Front

What is a linear equation?

Back

Front

What is the significance of the coefficient in front of x in a linear equation?

Back

The coefficient in front of x (the slope) indicates how much y changes for a one-unit increase in x.

Front

What does it mean for a function to be increasing?

Back

A function is increasing if, as the input (x) increases, the output (y) also increases.