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Published byElfreda Skinner Modified over 6 years ago

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Objective - To use x-intercepts and y-intercepts to graph a line. Make a table of values to graph y = 2x - 6. xy = 2x - 6 -32(-3) - 6= -12 -22(-2) - 6= -10 2(-1) - 6= -8 02(0) - 6= -6 12(1) - 6= -4 22(2) - 6= -2 32(3) - 6= 0 y x (3, 0) (0, -6) x-intercept y-intercept On the y-axis, x = 0 On the x-axis, y = 0

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Finding the Intercepts of a Line Find the intercepts of y = 2x - 6. x-intercepty-intercept (Set y = 0) (Set x = 0) y = 2x - 6 0 = 2x - 6 6 = 2x 2 3 = x x-int. = 3 y = 2x - 6 y = 2(0) - 6 y = -6 y-int. = -6 +6 Compare with the graph!

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Finding the Intercepts of a Line Find the intercepts of 2x - 3y = 18. x-intercepty-intercept (Set y = 0) (Set x = 0) 2x - 3y = 18 2x - 3(0) = 18 2x = 18 2 x = 9 x-int. = 9 2x - 3y = 18 2(0) - 3y = 18 -3y = 18 -3 y = -6 y-int. = -6

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Finding the Intercepts of a Line Find the intercepts of 3x + 4y = 8. x-intercepty-intercept (Set y = 0) (Set x = 0)

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Using the Intercepts to Graph Graph 3x - 5y = 10. x-intercept (y = 0) y-intercept (x = 0) y x Drawbacks -Only use two points to sketch the line. -No way to know if mistake is made.

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Using the Intercepts to Graph Graph 8x + 4y = 20. x-intercept (y = 0) y-intercept (x = 0) y x

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Using the Intercepts to Graph x-intercept (y = 0)y-intercept (x = 0) y x

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