More examples Once your statistical analyses are complete, you will need to summarize the data and results for presentation to your readers. Data summaries may take one of 3 forms:

Slope-intercept form linear equations Video transcript So you may or may not already know that any linear equation can be written in the form y is equal to mx plus b.

Where m is the slope of the line. The same slope that we've been dealing with the last few videos. The rise over run of the line. Or the inclination of the line. And b is the y-intercept. I think it's pretty easy to verify that b is a y-intercept.

The way you verify that is you substitute x is equal to 0. If you get x is equal to remember x is equal to 0, that means that's where we're going to intercept at the y-axis. If x is equal to 0, this equation becomes y is equal to m times 0 plus b.

I don't care what m is. So then y is going to be equal to b. So the point 0, b is going to be on that line. The line will intercept the y-axis at the point y is equal to b.

We'll see that with actual numbers in the next few videos. Just to verify for you that m is really the slope, let's just try some numbers out. We know the point 0, b is on the line.

What happens when x is equal to 1? You get y is equal to m times 1. Or it's equal to m plus b. So we also know that the point 1, m plus b is also on the line. This is just the y value. So what's the slope between that point and that point?

Let's take this as the end point, so you have m plus b, our change in y, m plus b minus b over our change in x, over 1 minus 0.

This is our change in y over change in x. We're using two points. That's our end point. That's our starting point. So if you simplify this, b minus b is 0. So hopefully you're satisfied and hopefully I didn't confuse you by stating it in the abstract with all of these variables here.

But this is definitely going to be the slope and this is definitely going to be the y-intercept. Now given that, what I want to do in this exercise is look at these graphs and then use the already drawn graphs to figure out the equation.

So we're going to look at these, figure out the slopes, figure out the y-intercepts and then know the equation. So let's do this line A first. So what is A's slope? Let's start at some arbitrary point.

Let's start right over there. We want to get even numbers. If we run one, two, three.Students learn to write the equation of a line in slope-intercept form using the graph of the line. In some problems, the graph is given, and in other problems, the graph must be drawn (using given information about points and slope).

The standard form for the equation of a line is But, the form that is used the most in Calculus is the slope - intercept form: Slopes are going to be a big deal and this form shows the slope! Practice finding the slope-intercept equation of a line from its graph. Writing slope-intercept equations.

Practice: Slope-intercept equation from graph. This is the currently selected item. Slope-intercept equation from slope & point.

Slope-intercept equation from two points. Determining the Equation of a Line From a Graph. Determine the equation of each line in slope intercept form. Checking Your Answers. Click "Show Answer" underneath the problem to see the answer.

Or click the "Show Answers" button at the bottom of the page to see all the answers at once. Graph: Show answer. Graph: Show answer. Graph: Show. Graph definition, a diagram representing a system of connections or interrelations among two or more things by a number of distinctive dots, lines, bars, etc.

See more. Sep 09, · This video provides an example of how to determine the equation of a line in slope intercept form given the graph of a line. Determine an equation from a graph Writing Linear.

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Writing Equations Of Lines Given A Graph Worksheets - Learny Kids