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1. Check ALL the equations below that show a function that would be a direct variation. y = 5x + 6 y = -¾x + 4 y = 5x y = -4x y = ⅝x x = 9 2 -2 4 -4 2 -2 4 -4 6 -6 2. Which graph shows a direct variation? A B C A C B 3. Check ALL the equations below that show a function that would be a direct variation. y = 5x y = -x + 4 y = -2x + 5 y = -4 y = 10x y = -⅔x 2 -2 4 -4 6 -6 2 -2 4 -4 6 -6 8 -8 10 -10 4. Which graph shows a direct variation? A B C A C B 5. Which table below shows a directly proportional relationship? Table A -1 0 1 2 x -10 -5 0 y 5 Table B 30 10 20 x 0 25 20 30 15 y Table C 0 -1 -3 -2 x 10 y 8 9 7 6. Which table below shows a directly proportional relationship? (Hint: find when x = 0 in all tables.) Table A -1 0 1 2 x 36 22 29 15 y Table B 20 10 15 x 5 12 6 9 3 y Table C -1 -2 -4 -3 x 10 y 8 9 7 7. TRUE or FALSE. The situation below shows a function that would be a directly proportional relationship. Carter already has $100 in his savings account and plans to add $15 a week. He is saving for a new bike. TRUE FALSE 8. TRUE or FALSE. The situation below shows a function that would be a directly proportional relationship. Carter is opening a savings account for the first timeand plans to add $20 a week. He is saving to attend a basketball camp over the summer. TRUE FALSE |