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Slope Intercept Form. Y intercept. To find the y-intercept, plug 0 in for x in the linear equation and solve for y. y=3x-6 (0, -6). Y intercept. The y-intercept is the point where a line crosses the y axis. At this point the value of x is 0. Slope. y=3x-6

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## Slope Intercept Form

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**Y intercept**• To find the y-intercept, plug 0 in for x in the linear equation and solve for y. • y=3x-6 (0, -6)**Y intercept**• The y-intercept is the point where a line crosses the y axis. • At this point the value of x is 0.**Slope**• y=3x-6 • To find the slope first find 2 points. • (2, 0) and (0, -6) • Then substitute in and solve**Slope Intercept Form**• y=mx + b • m is the slope • b is the y-intercept**Slope Intercept Form**y=3x-6 The slope is The y intercept is**Slope Intercept Form**To graph y=3x-6 • Plot (0, -6) • then count slope • Up 3 right 1 • Connect your points to make a line.**Writing an Equation**Write the equation of the line with slope 3/8 and y-intercept 5. Use slope intercept form: y=mx+b Substitute in for m and b**You Try**Write the equation of a line with slope -.5 and y-intercept -3 Write the equation of a line with slope 4 and y-intercept -5/2.**You Try**Identify the slope and y intercept. y = -5x + 13 Slope: Y-Intercept: Identify the slope and y intercept. y = 1/4x – 2 Slope: Y-Intercept:**Writing an Equation**Write the equation of the line with slope 2 That passes through pt. (1, 4). • Use slope intercept form: y = mx + b • Substitute in for m • Substitute in your points values for x and y • Solve for b • Use slope intercept form and substitute in b and m**You Try**Write the equation of a line with slope -3 that passes through pt. (2, 5)**Writing an Equation Given 2 Points**• Write y=mx+b • Calculate the slope using: • Substitute for m • Substitute one of the given points for x and y • Solve for b • Rewrite the equation using the calculated values for m and b

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