Linear EquationsLinear EquationsThe The

Slope-Intercept Slope-Intercept

FormForm

The Slope-Intercept Form is

a standard way to express

a linear equation.

Remember: A linear equation shows how the x-coordinate and the y-coordinate work together to

form a line on the coordinate plane.

Y is the y-coordinate.

M is the slope.X is the x-

coordinate.B is the y-intercept.

The Slope-Intercept Form is

Y = MX + B.

Remember:Remember: The y-coordinate tells us how far to count up The y-coordinate tells us how far to count up

or down when making our point. The y-or down when making our point. The y-coordinate is the second number in the ordered coordinate is the second number in the ordered pair. For example, if the ordered pair is (-3,5), pair. For example, if the ordered pair is (-3,5), we count up five spaces to make our point. we count up five spaces to make our point.

… … and ….and …. The x-coordinate tells us how far to count right The x-coordinate tells us how far to count right

or left when making our point. It is the first or left when making our point. It is the first number in the ordered pair. For example, if the number in the ordered pair. For example, if the ordered pair is (-3,5), we count 3 spaces to the ordered pair is (-3,5), we count 3 spaces to the left to make our point.left to make our point.

Now, you do something!Now, you do something!To do an inter-active activity To do an inter-active activity

practicing plotting and interpreting practicing plotting and interpreting

x-coordinates and y-coordinates, x-coordinates and y-coordinates,

click on click on

Ordered PairsOrdered Pairs

““Slope” means how much a line moves up or Slope” means how much a line moves up or down as it goes across some space.down as it goes across some space.

To watch a video

about slope,

click here

Destroy the cockroaches!Destroy the cockroaches!

To play a game uTo play a game using slope, click hsing slope, click here.ere.

Horizontal lines have a special slope.Horizontal lines have a special slope.

To do fun activities with To do fun activities with the slope of horizontal the slope of horizontal

lines, click here.lines, click here.

Go vertical, man!Go vertical, man!

We won’t forget about We won’t forget about vertical lines! To do vertical lines! To do

some activities with the some activities with the slope of vertical lines, slope of vertical lines, click onVertical Linesclick onVertical Lines

To learn three different

ways to find the y-intercept, click here.