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Sveta_85 [38]
3 years ago
9

The variables y and x have a proportional relationship, and y = 15 when x = 3. What is the value of x when y = 4?

Mathematics
2 answers:
madam [21]3 years ago
8 0

answer:

y = 19.2 when x = 8


So the answer is 8




MArishka [77]3 years ago
8 0

Answer:

x = 5/4 = 1.25

Step-by-step explanation:

There are 4  types of relationships namely; Direct, inverse, joint and partial. This is a direct proportion.

y = 15 when x = 3

y = kx where k is the constant of proportionality.

15 = k × 3

k = 15/3

k = 5, y = 5x

the value of x when y = 4,

4 = 5x

x = 5/4 = 1.25

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