Finding Slope from table or points

Front

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

Back

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

Front

If the points are (2, 3) and (4, 7), what is the slope?

Back

m = (7 - 3) / (4 - 2) = 4/2 = 2

Front

What does a slope of 0 indicate about a line?

Back

The line is horizontal.

Front

What does a positive slope indicate about the direction of a line?

Back

The line rises from left to right.

Front

What does a negative slope indicate about the direction of a line?

Back

The line falls from left to right.

Front

If the slope is undefined, what does that tell you about the line?

Back

The line is vertical.

Front

How do you find the slope from a table of values?

Back

Choose two points from the table and use the slope formula.

Front

What is the slope of a line that goes through the points (1, 2) and (1, 5)?

Back

The slope is undefined.

Front

If the slope of a line is -3, what does this mean in terms of the line's steepness?

Back

The line descends steeply from left to right.

Front

What is the slope of a line that is perfectly vertical?

Back

The slope is undefined.