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Point-slope & slope-intercept equations - Khan Academy
Point-slope is the general form y-y₁=m(x-x₁) for linear equations. It emphasizes the slope of the line and a point on the line (that is not the y-intercept). We can rewrite an equation in point-slope form to be in slope-intercept form y=mx+b, to highlight the same line's slope and y-intercept.
Worked example: slope from two points (video) | Khan Academy
Intro to slope. Positive & negative slope. Worked example: slope from graph. Slope from graph. Graphing a line given point and slope. Graphing from slope. Calculating slope from tables. Slope in a table. Worked example: slope from two points.
Worked example: slope from graph - Khan Academy
Learn how to calculate the slope of the line in a graph by finding the change in y and the change in x. Created by Sal Khan and Monterey Institute for Technology and Education.
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Review slope-intercept form and how to use it to solve problems. Skip to main content If you're seeing this message, it means we're having trouble loading external resources on our website.
Perpendicular lines from equation - Khan Academy
A perpendicular line has a slope of the negative inverse of the original equations slope. If y=2x+1 is the first equation, it has a slope of 2. The negative inverse of 2 is -½ so a perpendicular line would be y= -½x + ? And value can be used for the ? and the line remains perpendicular. y= -½x + 3 would be perpendicular to y=2x+1
Intro to slope | Algebra (video) | Khan Academy
Graphing a line given point and slope. Graphing from slope. Calculating slope from tables. Slope in a table. Worked example: slope from two points. Slope from two points. Slope review.
Slope-intercept equation from slope & point - Khan Academy
Learn how to write an equation in slope-intercept form (y=mx+b) for the line with a slope of -3/4 that goes through the point (0,8). We identify the slope (m) and y-intercept (b) to create our equation y = (-3/4)*x + 8.
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Slope from two points; Slope & distance: Quiz 1; Slope from equation; Linear equations in any form; Distance between two points; Slope & distance: Quiz 2; Slope & distance: Unit test; Our mission is to provide a free, world-class education to anyone, anywhere. Khan Academy is a 501(c)(3) nonprofit organization.