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PublishSukarno Wibowo Modified over 5 years ago
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3-8 Quiz The following questions are to help you decide if you understood today’s lesson. Please take time to see me if you do not get at least 2 questions right. Be sure to record your total on the portfolio sheet. TOMORROW is the journal check!
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1. Is the line through points P(0, 5) and Q(–1, 8) parallel to the line through points R(3, 3) and S(5, –1)? Explain. No, the lines have unequal slopes. Yes; the lines are both vertical. Yes; the lines have equal slopes. No, one line has slope, the other has no slope. Non-Response Grid
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2. Write an equation for the line parallel to y = –7x + 15 that contains P(9, –6).
x + 6 = 7(y – 9) y + 6 = 7(x – 9) y – 6 = –7(x – 9) y + 6 = –7(x – 9) Non-Response Grid
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Yes; their slopes are equal. Yes; their slopes have product 1.
3. Is the line through points P(0, –9) and Q(2, –8) perpendicular to the line through points R(1, 4) and S(3, 3)? Explain. Yes; their slopes are equal. Yes; their slopes have product 1. No, their slopes are not reciprocals. Yes; their slopes have product –1. Non-Response Grid
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4. Write an equation for the line perpendicular to y = 2x – 5 that contains (–3, 6).
Non-Response Grid
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5. Are the lines y = –x – 4 and 5x + 5y = 20 perpendicular? Explain.
Yes; their slopes are equal. Yes; their slopes have product –1. No; their slopes are not equal No; their slopes are not opposite reciprocals. Non-Response Grid
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3-8 p. 201-203 #8-42 even Journal check tomorrow!
Assignment 3-8 p #8-42 even Journal check tomorrow!
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