Pre Algebra Review

Front

What is a function?

Back

A function is a relation where each input has exactly one output.

Front

Is the graph of a vertical line a function?

Back

No, it is not a function because it fails the vertical line test.

Front

What does 'm' represent in the slope-intercept form of a line (y=mx+b)?

Back

'm' represents the slope of the line.

Front

What is the slope of a line?

Back

The slope is a measure of the steepness of a line, calculated as the rise over run.

Front

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

Back

The slope (m) is calculated using the formula m = (y2 - y1) / (x2 - x1).

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' in the equation.

Front

If m=2 and b=3, what is the slope-intercept equation?

Back

The equation is y=2x+3.

Front

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

Back

The y-intercept is 5.

Front

What does it mean if a line has a positive slope?

Back

A positive slope means that as x increases, y also increases.

Front

What does it mean if a line has a negative slope?

Back

A negative slope means that as x increases, y decreases.