The value of y is directly proportional to the value of x. If y = 36 when x = 140 what is the value of y whenx x = 70?

The value of y is 18 at x = 70

Step-by-step explanation:

The equation of the directly proportional is y = k x, where k is the constant of proportionality.

∵ The value of y is directly proportional to the value of x

→ By using the equation above

∴ y = k x

∵ x = 140 and y = 36

→ Substitute them in the equation above

∴ 36 = k(140)

∴ 36 = 140k

→ Divide both sides by 140

∵ = k

∴ = k

→ Substitute the value ok in the equation

∴ y = x ⇒ equation of proportionality

∵ x = 70

→ Substitute in the equation to find y

∴ y =   × 70

∴ y = 18

∴ The value of y is 18 at x = 70

answer: idk

step-by-step explanation:

hreryryrranswer:

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