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8 – 4 Slope Intercept Form. Objective to use the slope intercept form. 8 – 4 Slope Intercept Form. Objective to use the slope intercept form y = mx + b. 8 – 4 Slope Intercept Form. Objective to use the slope intercept form y = mx + b: equation of a straight line.
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8 – 4 Slope Intercept Form • Objective to use the slope intercept form
8 – 4 Slope Intercept Form • Objective to use the slope intercept form • y = mx + b
8 – 4 Slope Intercept Form • Objective to use the slope intercept form • y = mx + b: equation of a straight line
8 – 4 Slope Intercept Form • Objective to use the slope intercept form • y = mx + b: equation of a straight line • m is slope
8 – 4 Slope Intercept Form • Objective to use the slope int form • y = mx + b: equation of a straight line • m is slope • b is y-intercept
8 – 4 Slope Intercept Form • Objective to use the slope int form • y = mx + b: equation of a straight line • m is slope • b is y-intercept, where line crosses the y axis
8 – 4 Slope Intercept Form • Objective to use the slope int form • y = mx + b: equation of a straight line • m is slope • b is y-intercept, where line crosses the y axis because x is 0.
8 – 4 Slope Intercept Form • y = mx + b • y = 2x + 4
8 – 4 Slope Intercept Form • y = mx + b • y = 2x + 4 read off m =
8 – 4 Slope Intercept Form • y = mx + b • y = 2x + 4 read off m = 2
8 – 4 Slope Intercept Form • y = mx + b • y = 2x + 4 read off m = 2 b =
8 – 4 Slope Intercept Form • y = mx + b • y = 2x + 4 read off m = 2 b = 4
8 – 4 Slope Intercept Form • y = mx + b • y = 2x + 4 • read off m = 2 b = 4 • Graph:☺
8 – 4 Slope Intercept Form • Example 1: • y = 3x + 2 • 5 • read off m =
8 – 4 Slope Intercept Form • Example 1: • y = 3x + 2 • 5 • read off m = 3 • 5
8 – 4 Slope Intercept Form • Example 1: • y = 3x + 2 • 5 • read off m = 3 • 5 • b =
8 – 4 Slope Intercept Form • Example 1: • y = 3x + 2 • 5 • read off m = 3 • 5 • b = 2 • Graph:☺
8 – 4 Slope Intercept Form • Example 2: • y = - 3x + 6 • 4
8 – 4 Slope Intercept Form • Example 2: • y = - 3x + 6 • 4 • read off m =
8 – 4 Slope Intercept Form • Example 2: • y = - 3x + 6 • 4 • read off m = -3 • 4
8 – 4 Slope Intercept Form • Example 2: • y = - 3x + 6 • 4 • read off m = -3 • 4 • b =
8 – 4 Slope Intercept Form • Example 2: • y = - 3x + 6 • 4 • read off m = -3 • 4 • b = 2 • Graph:☺
8 – 4 Slope Intercept Form • Example 3: Find m, y-intercept and graph. • 2x – 5y = 10 • ☺
8 – 4 Slope Intercept Form • If slope is equal for two different lines the lines are parallel.
8 – 4 Slope Intercept Form • If slope is equal for two different lines the lines are parallel. • Example 4: Are 2x + y = 8 and 2x + y = 6 parallel?
8 – 4 Slope Intercept Form • If slope is equal for two different lines the lines are parallel. • Example 4: Are 2x + y = 8 and 2x + y = 6 parallel? • Find slope, solve for y:
8 – 4 Slope Intercept Form • If slope is equal for two different lines the lines are parallel. • Example 4: Are 2x + y = 8 and 2x + y = 6 parallel? • Find slope, solve for y: • ☺
8 – 4 Slope Intercept Form • Homework: P. 368 3 – 30 every third