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Slope Intercept Form. Y intercept. The y-intercept is the point where a line crosses the y axis. At this point the value of x is 0. 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). Slope. y=3x-6
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Y intercept • The y-intercept is the point where a line crosses the y axis. • At this point the value of x is 0.
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)
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 • b is the
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.
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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)