What is the slopeintercept formula PointSlope Formula I
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What is the slopeintercept formula? Point-Slope Formula I can write an equation given a point and the slope.
2 forms to write linear equations. 1. Slope-intercept form. m = slope y = mx + b b= y-intercept 2. Point-slope form. or y = m(x – x 1) + y 1
Write an equation in slope-intercept form. Slope = 2; b= -5 y = mx + b y = x 2 -5 Slope = 3; b= 4 y = mx + b y = x 3 + 4
Write an equation in slope-intercept form. Slope = 4; b= -1 y = mx + b y = x 4 -1 Write an equation in Point-slope form. Slope = 2 and the line goes through (5, 7) y = m(x – x 1) + y 1 y = (x – ) 2 5 + 7
Write an equation in point –slope form AND slope-intercept form given a point and slope. Slope = ½ and the line goes through (4, -8) y = m(x – x 1) + y 1 y = (x – ) ½ 4 - 8 Point-slope form Slope-intercept form
Write an equation in Point-Slope Form and in slope-intercept form Slope = -4 and the line goes through (-3, -8) y = m(x – x 1) + y 1 y = (x – ) -4 -3 - 8 y = -4 (x + 3) - 8 Point-slope form y = -4 x - 12 - 8 y = -4 x - 20 Slope-intercept form
Write and graph an equation through the points (2, 6) and (4, 16). Find the slope y = m(x – x 1) + y 1 y = (x – ) 5 2 + 6 y = 5 x – 10 + 6 y = 5 x - 4 16 6 4 2 = 10 = 5 2 m= 5 b= -4 Page 318: 8 -11, 19 -21, 37 -39
homework • WS: 5. 4 point-slope formula.
