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Quizzes Pencil and calculators only.

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**Objective: To identify the x- and y- intercepts. Standard 6.0**

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**Intercepts X-Intercept: where the line crosses the x-axis**

ordered pair: (x,0) Y-Intercept: where the line crosses the y-axis Ordered pair: (0,y) Y-intercept X-intercept

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**Example 1 State the x- and y- intercepts x-intercept: y-intercept:**

(-4,0) (0,2)

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**TOO State the x- and y- intercepts x-intercept: y-intercept: (3,0)**

(0,6)

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**Will this vertical line ever cross the y-axis?**

Example 3 State the x- and y- intercepts x-intercept: y-intercept: (5,0) none Will this vertical line ever cross the y-axis? no

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**Cover up Method! If an equation is in standard form**

ax + by = c a,b,c are all #’s Cover up method: To find x-intercept, cover up the y To find y-intercept, cover up the x Example: 5x + 4y = 20 y-intercept: (0,5) x-intercept: (4,0)

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**Examples 5 & 6 6x + 3y = -18 y-intercept: (0,-6) x-intercept: (-3,0)**

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**TOO Write the x- and y- intercepts as ordered pairs**

3y = 2x x – 3y = 20 (0,4) (-6,0)

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**Review – Write an equation in point-slope**

(-4,3) m = 1 7 (6,-2)(5,7)

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**Review – Write an equation in Standard Form**

(5,-15)(11,-3) y+5 = -4(x+1)

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**Review – Write an equation in Standard Form**

(8,-7) m = undefined (9,-2) m = 0

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Homework Pg. 350 #19-21 a & b, 22-27 Write the intercepts as an ordered pair X-intercept: (#,0) Y-intercept: (0,#)

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Monster Problem Time!!

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