Slope of a line

He put x's on top and y's on bottom (he did run over rise)

He changed the order of the points.

He added instead of subtracting.

He put one point in the numerator and one point in the denominator.

It goes up from left to right

It goes down from left to right

It is perfectly horizontal

It is perfectly vertical

$$\frac{2}{3}$$

$$\frac{3}{2}$$

3

$$\frac{1}{3}$$

-1

0

1

2

$$\frac{2}{3}$$

$$\frac{3}{2}$$

3

$$\frac{1}{3}$$

0

1

2/3

2

Slope of 4) is -4, y-intercept is 5; Slope of 5) is 3/4, y-intercept is -1; Slope of 6) is 2, y-intercept is -2; Slope of 7) is -5/2, y-intercept is 3; Slope of 8) is -4, y-intercept is 0; Slope of 9) is 3, y-intercept is -3

Slope of 4) is 4, y-intercept is 5; Slope of 5) is 3/4, y-intercept is 1; Slope of 6) is 2, y-intercept is 2; Slope of 7) is -5/2, y-intercept is 3; Slope of 8) is -4, y-intercept is 0; Slope of 9) is 3, y-intercept is -3

Slope of 4) is -4, y-intercept is 5; Slope of 5) is -3/4, y-intercept is 1; Slope of 6) is 2, y-intercept is -2; Slope of 7) is -5/2, y-intercept is 3; Slope of 8) is -4, y-intercept is 0; Slope of 9) is 3, y-intercept is -3

Slope of 4) is -4, y-intercept is 5; Slope of 5) is 3/4, y-intercept is -1; Slope of 6) is 2, y-intercept is -2; Slope of 7) is -5/2, y-intercept is 3; Slope of 8) is 4, y-intercept is 0; Slope of 9) is 3, y-intercept is -3

Choose two points, find the rise and run, then divide rise by run.

Choose any point and count the number of squares to the y-axis.

Measure the angle the line makes with the x-axis.

Count the number of grid squares the line crosses.

A positive slope rises as it moves right.

A negative slope falls as it moves right.

A zero slope is a horizontal line.

A vertical line has an undefined slope.

Slope = 3, y-intercept = -3

Slope = -3, y-intercept = 3

Slope = 1, y-intercept = -3

Slope = 3, y-intercept = 3

Positive, negative, zero, undefined; by observing if the line goes up, down, is horizontal, or vertical

Only positive and negative; by checking if the line goes up or down

Only zero and undefined; by checking if the line is horizontal or vertical

Positive, negative, and zero; by observing if the line goes up, down, or is flat