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ki77a [65]
3 years ago
10

If y varies directly with x, and y = 10 when x = 4, write the direct linear variation equation

Mathematics
2 answers:
torisob [31]3 years ago
4 0
The answer is c. I chose the answer c because y=5/2x(I think you forgot to put the x in the question) filled in with the numbers are true while a, b, and d aren't true if filled with 10 and 4.
igomit [66]3 years ago
4 0

Answer:

y=\frac{5}{2}x

Step-by-step explanation:

Given,

y varies directly with x,

I.e. y\propto x

\implies y = kx ----(1)

Where,

k = constant of proportionality,

We have,

y = 10 when x = 4

From equation (1),

10=4x\implies x = \frac{10}{4}=\frac{5}{2}

Again from equation (1),

y=\frac{5}{2}x

Which is the required direct linear variation equation.

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