Finding Slope

Front

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

Back

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

Front

What does a positive slope indicate about a line on a graph?

Back

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

Front

What does a negative slope indicate about a line on a graph?

Back

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

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.

Front

If the slope is 1/3, what does this mean in terms of rise over run?

Back

For every 1 unit rise, there is a 3 unit run.

Front

How do you determine if a slope is undefined?

Back

A slope is undefined if the denominator (x2 - x1) is 0.

Front

Find the slope of the line passing through the points (2, 3) and (5, 7).

Back

Slope = (7 - 3) / (5 - 2) = 4 / 3.

Front

What type of slope does the graph have if it goes down from left to right?

Back

Negative slope.

Front

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

Back

The slope is 2.