Writing an equation of the line in slope-intercept form

When using this form you will substitute numerical values for x1, y1 and m. The rate is your slope in the problem. The process for simplifying depends on how you are going to give your answer. Equations that are written in slope intercept form are the easiest to graph and easiest to write given the proper information.

When a problem asks you to write the equation of a line, you will be given certain information to help you write the equation. We know we are looking for a line parallel to. That means our line will have the same slope as the line we are given.

I substituted the value for the slope -2 for m and the value for the y-intercept 5 for b.

Slope Intercept Form

Yes, it is rising; therefore, your slope should be positive! To learn more about parallel and perpendicular lines and their slopes, click here link to coord geometry parallel As a quick reminder, two lines that are parallel will have the same slope. 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.

You can take the slope-intercept form and change it to general form in the following way. The variables x and y should always remain variables when writing a linear equation.

So if we can find the slope ofwe will have the information we need to proceed with the problem. You can use either of the two points you have been given and you equation will still come out the same.

Given a Point and a Slope When you are given a point and a slope and asked to write the equation of the line that passes through the point with the given slope, you have to use what is called the point-slope form of a line.

Find the equation of the line that passes through the points -2, 3 and 1, Now substitute those values into the point-slope form of a line. All you need to know is the slope rate and the y-intercept.

Transforming the slope-intercept form into general form gives Parallel and Perpendicular There is one other common type of problem that asks you to write the equation of a line given certain information.

Writing Equations in Slope Intercept Form

Now that you have a slope, you can use the point-slope form of a line. Although the numbers are not as easy to work with as the last example, the process is still the same. Transforming the slope-intercept form into general form gives If the problem in Example 4 had asked you to write the equation of a line perpendicular to the one given, you would begin the problem the same way.

The first step is to find the slope of the line that goes through those two points. Is your graph rising from left to right? You may be wondering why this form of a line was not mentioned at the beginning of the lesson with the other two forms.

If is parallel to and passes through the point 5, 5transform the first equation so that it will be perpendicular to the second. Both forms involve strategies used in solving linear equations.

We will maintain the labeling we used for finding slope. The process for obtaining the slope-intercept form and the general form are both shown below. Since you have a point and a slope, you should use the point-slope form of a line. If two lines are perpendicular, their slopes are negative reciprocals of each other.

We are given the point, but we have to do a little work to find the slope. Plug those values into the point-slope form of the line: If you need to practice these strategies, click here.

Find the equation of the line that passes through 1, -5 and is parallel to.Writing linear equations using the slope-intercept form. Where m is the slope of the line and b is the y-intercept.

You can use this equation to write an equation if you know the slope and the y-intercept. We've got a value for m and a value for b. In many cases the value of b is not as easily read.

If you know two points on a line, you can use them to write the equation of the line in slope-intercept form.

The first step will be to use the points to find the slope of the line. Slope Intercept Equation of Vertical and Horizontal lines Vertical Lines. The Equation of a vertical line is x = b. Since a vertical line goes straight up and down, its slope is undefined. Also, the x value of every point on a vertical line is the same.

Therefore, whatever the x value is, is also the value of 'b'.

Writing linear equations using the slope-intercept form

Slope Intercept Form Calculator. A method used to find the equation of straight line is slope intercept form. The slope intercept form equation is expressed as y=mx+c (m=slope, c = y intercept). Hence, you can find the equation of straight line with slope and y-intercept using this calculator.

Write an equation in slope -intercept form for the line described. slopepasses through (0, 5) 62/87,21 Substitute m = and (x, y) = (0, 5) in the equation y. The slope-intercept form and the general form are how final answers are presented.

Let's Practice: Find the equation of the line that goes through the .

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Writing an equation of the line in slope-intercept form
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