Slope & Y-Intercept from a Graph

Front

What is the formula for calculating slope?

Back

Slope = (rise) / (run)

Front

What does a positive slope indicate about a line?

Back

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

Front

What does a negative slope indicate about a line?

Back

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

Front

What is the y-intercept of a line?

Back

The y-intercept is the point where the line crosses the y-axis.

Front

How do you identify the y-intercept from a graph?

Back

Look for the point where the line intersects the y-axis (x=0).

Front

What type of slope does a horizontal line have?

Back

A horizontal line has a slope of zero.

Front

What type of slope does a vertical line have?

Back

A vertical line has an undefined slope.

Front

If a line has a slope of 1/2, what does this mean in terms of rise and run?

Back

For every 2 units you move right (run), the line rises 1 unit.

Front

What is the slope of a line that goes down from left to right?

Back

The slope is negative.

Front

How can you determine the slope from two points on a line?

Back

Use the formula: Slope = (y2 - y1) / (x2 - x1).