# Linear functions slope-intercept form write an equation in point

We can use point-slope form. Standard Form of a Line Another way that we can represent the equation of a line is in standard form.

### Point slope formula

They've given me the value for m, along with values for an x and a y. This makes sense because we used both points to calculate the slope. Our last video shows another example of writing the equation of a line given two points on the line. There are different types of "standard" formats for straight lines; the particular "standard" format your book refers to may differ from that used in some other books. Write the final equation in slope-intercept form. I like slope-intercept form the best. But the best part about the slope-intercept form is that you can read off the slope and the intercept right from the equation.

Located at:. Vertical and Horizontal Lines The equations of vertical and horizontal lines do not require any of the preceding formulas although we can use the formulas to prove that the equations are correct.

## Linear equation formula

Show Solution First, we calculate the slope using the slope formula and two points. This is great for graphing , and can be quite useful for word problems. Provided by: OpenStax. In the slope-intercept form of a straight line, I have y, m, x, and b. Write the Equation of a Linear Function Part I Learning Outcomes Define the equation of a line given the slope and a point Define the equation of a line given two points Write a linear function in standard form Write the equation for linear functions whose graphs are horizontal and vertical lines Point-Slope Form We have seen that we can define the slope of a line given two points on the line and use that information along with the y-intercept to graph the line. We can use point-slope form. If done correctly, the same final equation will be obtained. Our last video shows another example of writing the equation of a line given two points on the line. In our next example, we will start with two points and find the equation of the line that passes through them. Write the equation in standard form. Show Solution We begin by using point-slope form. For a review of how this equation is used for graphing, look at slope and graphing. We need only one point and the slope of the line to use the formula. Point-Slope Form Parallel, Perpendicular Lines Purplemath Straight-line equations, or "linear" equations, graph as straight lines, and have simple variable expressions with no exponents on them.

First, we find the slope using any two points on the line. Then, move both variables to the left side of the equal sign and constants to the right side of the equal sign. This is great for graphingand can be quite useful for word problems.

They've given me the value for m, along with values for an x and a y. This makes sense because we used both points to calculate the slope. Authored by: James Sousa Mathispower4u.

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