Find slope and y-intercept given an equation in standard form. 5.5 day 2 3x - 6y = 12.

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Presentation transcript:

Find slope and y-intercept given an equation in standard form. 5.5 day 2 3x - 6y = 12

How?: Solve for y! 3x + 5y = 15 5y = –3x y = –3x Change from standard form to slope-intercept form. 3x + 5y = 15 -3x 3x - 6y = 12 -3x -6y = -3x y = -3x y = 1x - 2 2

Write an equation in slope-intercept form then find the slope and y-intercept. 8x + 4y = 12 Slope-intercept form: y = mx + b 8x + 4y = 12 -8x - 8x 4y = -8x y = -2x + 3 Slope =y-intercept = Slope-intercept form: y = mx + b y = -2x Slope-intercept form: y = mx + b y = -2x + 3 3

3x + 5y = 10 Slope-intercept form: y = mx + b 3x + 5y = 10 -3x - 3x 5y = -3x y = (-3/5)x + 2 Slope =y-intercept = Slope-intercept form: y = mx + b y = (-3/5)x Slope-intercept form: y = mx + b y = (-3/5)x Write an equation in slope-intercept form then find the slope and y-intercept.

Write an equation in slope-intercept form, then find the slope and y-intercept. 4x + 2y = 8 Slope-intercept form: y = mx + b 4x + 2y = 8 -4x - 4x 2y = -4x y = -2x + 4 Slope =y-intercept = y = -2x y = -2x x + 2y – 8 = 0

Write an equation in slope-intercept form, then find the slope and y-intercept. 3x + 2y = 6 Slope-intercept form: y = mx + b -3x 3x + 2y = 6 2y = 6 – 3x 222 y = 3 – 3x 2 Slope =y-intercept = y = 3 – 3x Slope-intercept form: y = mx + b 2 y = 3 – 3x Slope-intercept form: y = mx + b

I can find the slope and y- intercept given an equation in standard form. Assignment: worksheet: 5.5 day 2