Y is directly proportional to x when y=30, x=6

Mathematics

1 answer:

lbvjy [14]3 years ago

3 0

Answer:

see explanation

Step-by-step explanation:

Given that y is directly proportional to x then the equation relating them is

y = kx ← k is the constant of proportionality

To find k use the condition when y = 30, x = 6

k = $\frac{y}{x}$ = $\frac{30}{6}$ = 5

y = 5x ← equation of proportionality

When x = 12, then

y = 5 × 12 = 60

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