Point-slope form to write an equation

Since you have a point and a slope, you should use the point-slope form of a line. Let me write it in those same colors. So this is going to be equal to m. If you want to simplify it a little bit, you could write it as y minus 5 is equal to 2 times x plus 7.

Preparing America's students for success.

Think about it this way: The videos are FREE with registration on the site. As mentioned above, parallel lines have the same slope.

Intro to point-slope form

The slope of the parallel line is undefined and the slope of the perpendicular line is 0. What this means to you is that downloads will be much faster than before. So what is the slope between a, b and x, y?

Coordinate System and Graphing Lines including Inequalities

So, if we know the slope of the line parallel to our line, we have it made. You could have used any triangle to figure out the slope and you would still get the same answer. Note that two lines are parallel if their slopes are equal and they have different y-intercepts.

Since you are given two points, you can first use the slope formula to find the slope and then use that slope with one of the given points.

welcome to coolmath

And we know this is the slope between these two points. Therefore the slope of this line is 2. If we re-write in slope-intercept form, we will easily be able to find the slope. This type of problem involves writing equations of parallel or perpendicular lines.

So we get y minus 5 is equal to 2 times x plus 2 times 7, so that's equal to Now you will have to read through the problem and determine which information gives you two points.

Let's not use just a, b and a slope of m anymore.Recall that the slope (m) is the "steepness" of the line and b is the intercept - the point where the line crosses the y-axis.

In the figure above, adjust both m and b. Learn why the Common Core is important for your child. What parents should know; Myths vs. facts.

Using the Point-Slope Form of a Line

Algebra 1 Here is a list of all of the skills students learn in Algebra 1! These skills are organized into categories, and you can move your mouse over any skill name to preview the skill.

After completing this tutorial, you should be able to: Find the slope of a line that is parallel to a given line.

Point-Slope Equation of a Line

Find the slope of a line that is perpendicular to a given line. Equation of a Line from 2 Points. First, let's see it in action. Here are two points (you can drag them) and the equation of the line through them. Finding features and graph from point-slope equation When we have a linear equation in point-slope form, we can quickly find the slope of the corresponding line and a point it passes through.

This also allows us to graph it.

Download
Point-slope form to write an equation
Rated 4/5 based on 74 review