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Learn the basics of algebra and slope-intercept form with Khan Academy's free online educational resources.
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Practice finding the slope-intercept equation of a line from its graph. Skip to main content If you're seeing this message, it means we're having trouble loading external resources on our website.
The slope of a line is a measure of its steepness. Mathematically, slope is calculated as "rise over run" (change in y divided by change in x).
Course: Algebra 1 > Unit 4. Lesson 4: x-intercepts and y-intercepts. Intro to intercepts. x-intercept of a line. Intercepts from a graph. Intercepts from an equation. Intercepts from an equation. Intercepts from a table. Intercepts from a table.
Course: Algebra 1 > Unit 5. Lesson 1: Intro to slope-intercept form. Intro to slope-intercept form. Intro to slope-intercept form. Slope and y-intercept from equation. Worked examples: slope-intercept intro. Slope-intercept intro. Linear equation word problems.
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To graph a linear equation in slope-intercept form, we can use the information given by that form. For example, y=2x+3 tells us that the slope of the line is 2 and the y-intercept is at (0,3). This gives us one point the line goes through, and the direction we should continue from that point to draw the entire line.
Learn how to find the equation of a line parallel to another line given by an equation, using slope and y-intercept. Watch an example video and practice with Khan Academy.
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