Slope-intercept form y = mx + cy = mx + c General form Ax + By + C = 0 In slope-intercept form, the When the equation of straight AC (a) How to find the.

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Lesson 5.1 Write Equations in Slope-Intercept Form.

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Slope-intercept form y = mx + cy = mx + c General form Ax + By + C = 0 In slope-intercept form, the When the equation of straight AC (a) How to find the slope of a straight line? 4. Equations of Straight Lines - By = Ax + C y =x+ Slope of straight line Finding slope Easy Memory Tips: y-intercept Slope = (B≠0) Ax + By + C = 0 - By = Ax + C x -B-B -B-B line is transformed into slope- intercept form, the coefficient of x in the equation is the slope of the straight line. constant term of the equation is the y-intercept of the straight line.

Finding slope Easy Memory Tips: Finding y-intercept Easy Memory Tips: (a) How to find the slope of a straight line? (b) How to find the y-intercept of a straight line? y-intercept = (B≠0) Method I: 4. Equations of Straight Lines Slope = (B≠0) Slope-intercept form y = mx + c General form Ax + By + C = 0 - By = Ax + C y = Slope of straight liney-intercept - By = Ax + C x When the equation of straight line is transformed into slope- intercept form, the coefficient of x in the equation is the slope of the straight line. In slope-intercept form, the constant term of the equation is the y-intercept of the straight line. Slope of straight line y-intercept

When it is required to find both the slope and the y-intercept or the equation of straight line is in slope-intercept form, use Method I to get the y-intercept. When the equation of straight line is in general form and it is required to find the y-intercept only, it is better to use Method II to get the y-intercept. Find the y-intercept of the straight line Method II: Slope-intercept form y = mx + c Substitute x = 0 into the Method I: Substitute x = 0 into Ax + By + C = 0, By + C = 0 y =y-intercept = 4. Equations of Straight Lines Finding y-intercept Easy Memory Tips: In slope-intercept form, the constant term of the equation is the y-intercept of the straight line. y-intercept (b) How to find the y-intercept of a straight line? y-intercept = (B≠0) Ax + By + C = 0. equation to find the value of y.

Substitute y = 0 into the Find the x-intercept of the straight line Substitute y = 0 into Ax + By + C = 0, Ax + C = 0 Finding x-intercept Easy Memory Tips: (c) How to find the x-intercept of a straight line? x = x-intercept = x-intercept = (A≠0) 4. Equations of Straight Lines equation to find the value of x. Ax + By + C = 0.