Determine whether y varies directly with x if so find the constant of variation k 3y=-7x-18

Asked by maham237 @ 22/12/2020 in Mathematics viewed by 368 People

Determine whether y varies directly with x if so find the constant of variation k. 3y=-7x-18
A- yes; 3
B-yes; -7
C-no
D- yes; 7/3

Answered by maham237 @ 22/12/2020

If y varies directly with x, then a relationship exists in the form y = kx +c
where k = the constant of variation.

The given relationship is
3y = 7x - 18
or
y = (7/3)x - 6
Therefore the constant of variation is 7/3.

Answer: D. Yes; 7/3

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