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

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

Back

Undefined (vertical line).

Front

How do you interpret a slope of 1/3?

Back

For every 3 units you move right, you move up 1 unit.

Front

What is the slope of the line represented by the equation y = 2x + 1?

Back

The slope is 2.

Front

If a line has a slope of -5, what does this mean in terms of rise over run?

Back

For every 1 unit you move right, you move down 5 units.