meredith48034 meredith48034

25-09-2020
Mathematics

contestada

y varies directly with x Part 1

19. If y = 4 when x = -2, find x when y = 6
20. If y = 6 when x = 2, find x when y = 12
21. If y = 7 when x = 2, find x when y =3

Respuesta :

sqdancefan sqdancefan

25-09-2020

Answer:

19. -3

20. 4

21. 6/7

Step-by-step explanation:

Since the variables are proportional, you can multiply the given x value by the new/old ratio of y-values.

19. x = 6/4(-2) = -3

20. x = (12/6)(2) = 4

21. x = (3/7)(2) = 6/7

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