Mathematics

Mathematics, 18.07.2019 15:30, lakaralake11

Which of the following equations represents a direct variation? a y=x -1 b y=×/3c y = x + 5d y = 2x-3

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Mathematics, 30.06.2019 09:30, neriah30

1. the value of y varies directly with x, and y = 48 when x = 16. find y when x = 176. y = 3 y = 368 y = 58.7 y = 528 2.write an equation in slope-intercept form of the line with slope 3/4 that contains the point (−4,1). y=3/4x+3 y=3/4x+1 y=3/4x−4 y=3/4x+4 3. tell whether the equation 4x + y = 3 represents a direct variation. if so, identify the constant of variation. direct variation, k = −1/4 direct variation, k = 3 direct variation; k = −4 not a direct variation.

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Mathematics, 16.07.2019 19:00, John7Gilbert

For questions 1-3 determine whether the equation represents a direct variation. if it does, find the constant of variation. 1. 2 y = 5x +1 a. not a direct variation b. direct variation, constant of variation is 5/2 c. direct variation, constant of variation is 2/5 d. direct variation, constant of variation is 1 -2/5 2. -12x = 6y a. not a direct variation b. direct variation, constant of variation is 1/2 c. direct variation, constant of variation is 2 d. direct variation, constant of variation is -2 3. 7x -1.4y = 0 a. not a direct variation b. direct variation, constant variation is 1/2 c. direct variation, constant variation is 2 d. direct variation, constant variation is -2 for questions 4-6 suppose y varies directly with x. write a direct variation equation that relates x and y. 4. y= -10 when x =2 a. y= -5x b. y= -1/5x c. y= 5x d. y= 1/5 x 5. y= 7 1/2 when x=3 a. y= 3/2x b. y= 2/3x c. y= 5/2 d. y= 2/5 6. y=10.4 when x=4 a. y= 3.4x b. y= 3.8x c. y= 3.2x d. y= 2.6x for questions 7 and 8 for the data in the table, tell whether y varies directly with x. if it does, write an equation for the direct variation. 7. (x.y) (3, 5.4) (7, 12.6) (12, 21.6) a. not a direct variation b. direct variation, y= 1.8x c. direct variation, y= 4x d. direct variation, y= 5/9x 8. (x,y) (-2,1) (3,6) (8,11) a. not a direction variation b. direct variation, y=x c. direct variation, y=2x d. direct variation, y= -2x

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Mathematics, 26.09.2019 22:30, dee024

For questions 1-3 determine whether the equation represents a direct variation. if it does, find the constant of variation. 1. 2 y = 5x +1 a. not a direct variation b. direct variation, constant of variation is 5/2 c. direct variation, constant of variation is 2/5 d. direct variation, constant of variation is 1 -2/5 2. -12x = 6y a. not a direct variation b. direct variation, constant of variation is 1/2 c. direct variation, constant of variation is 2 d. direct variation, constant of variation is -2 3. 7x -1.4y = 0 a. not a direct variation b. direct variation, constant variation is 1/2 c. direct variation, constant variation is 2 d. direct variation, constant variation is -2 for questions 4-6 suppose y varies directly with x. write a direct variation equation that relates x and y. 4. y= -10 when x =2 a. y= -5x b. y= -1/5x c. y= 5x d. y= 1/5 x 5. y= 7 1/2 when x=3 a. y= 3/2x b. y= 2/3x c. y= 5/2 d. y= 2/5 6. y=10.4 when x=4 a. y= 3.4x b. y= 3.8x c. y= 3.2x d. y= 2.6x for questions 7 and 8 for the data in the table, tell whether y varies directly with x. if it does, write an equation for the direct variation. 7. (x.y) (3, 5.4) (7, 12.6) (12, 21.6) a. not a direct variation b. direct variation, y= 1.8x c. direct variation, y= 4x d. direct variation, y= 5/9x 8. (x,y) (-2,1) (3,6) (8,11) a. not a direction variation b. direct variation, y=x c. direct variation, y=2x d. direct variation, y= -2x

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Mathematics, 14.10.2019 11:30, Callmetay24

Which explains whether or not the graph represents a direct variation? the graph has a constant of variation of 3, so it represents a direct variation. the graph has a slope of 3, so it represents a direct variation. the graph has a positive slope, so it does not represent a direct variation. the graph does not begin at the origin, so it does not represent a direct variation.

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