Graphing a Linear Equation
Using slope intercept form is one of the quickest and easiest ways to graph a linear equation.
Before we begin, I need to introduce a little vocabulary. We are going to talk about x and y intercepts.
An x intercept is the point where your line crosses the x-axis. The y intercept is the point where your line crosses the y-axis.
We are only going to focus on the y intercept in this lesson, but you'll need to know x intercept for later.
As you work through these examples, if you find that you are really having difficulty, take a look at the Algebra Class E-course. You will have instant access to more examples on video, a lot of practice problems and step-by step answer keys. It may truly be what you need to be successful with graphing equations.
Let's look at an example:
Slope intercept form is used when your linear equation is written in the form:
y = mx+b
x and y are your variables. m will be a numeral, which is your slope. b will also be a numeral and this is the y-intercept.
In this form only (when your equation is written as y = ....) the coefficient of x is the slope and the constant is the y intercept.
Let's look at a few examples and I promise that you'll LOVE this new way of graphing!
Need a little more clarification? No problem, just check out the following video. Example 1 will be explained again step by step.
Here's a quick summary of this lesson:
Tip: You have to be very accurate in plotting your points and drawing your lines in order to be able to read your graph to find other solutions!
Type in your equation and click "Draw".
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