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Ch. 4 Warm-ups Algebra I

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Section 4-1 Warm-up Graph the following equations using either a table or the cover-up method. You choose the best option 1) y = -5x + 72) 15x + 12y = 60

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Section 4-1 Part II Warm-Up Identify the x and y intercepts, then graph the following equations using the slope-intercept form method. 1) y = 2x – 52) y = -¾ x + 8

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Section 4-2 Part I Warm-Up Graph the following lines 1) x = 32) y = -1 3) y = 04) x = -7

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Section 4-2 Part II Warm-Up Write an equation for the line with the given slope, and through the given point in slope- intercept form. 1) m = 2, (-3, 5)2) m = -5, (4, 8)

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Section 4-3 Part I Warm-Up Write the equation of the line that passes through the given points in slope-intercept form. 1) (3, 4), (6, 2)2) (1, 4), (5, -12)

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Section 4-3 Part II Warm-Up 1) Write an equation for the line with a slope of -3 and through the point (-1, 5) in point-slope form 2) Identify the slope and point on the line using the equation: y – 4 = -9(x + 3)

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Section 4-4 Part I Warm-up Re-write the following equation in standard form: y + 5 = -2(x – 3) Re-write the following equation in slope- intercept form: 8x – 2y = 24

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Section 4-4 Part II 1)Are the following lines parallel? 2x + 4y = 12 y = 2x +5 2) Write the equation for the line parallel to y = 4x + 5 and through the point (-2, -10)

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Section 4-5 Warm-Up 1)Are the following lines perpendicular? y = 3x + 5 2x + 6y = 12 2) Write the equation for the line perpendicular to y = 4x + 5 and through the point (8, 2)

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