Slope and Y-Intercept

A Real World Connection

What it is...

Every straight line can be represented by an equation: y = mx + b. The coordinates of every point on the line will solve the equation if you substitute them in the equation for x and y.


The slope m of this line - its steepness, or slant - can be calculated like this:

m = change in y-value

change in x-value


The equation of any straight line, called a linear equation, can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept.


The y-intercept of this line is the value of y at the point where the line crosses the y axis.

So what does this mean for me in the real world?

Explanation of how slope connects with a career or task in the real world

Let's hear an explanation from another student...

Slope-Intercept Form y=mx+b