The variables y and x have a proportional relationship, and y = 15 when x = 3. What is the value of x when y = 4?
2 answers:
answer:
y = 19.2 when x = 8
So the answer is 8
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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