If y varies directly as x and y = -24 when x = 8, then how do you find y when x = 10?

blogswput

blogswput

Answered question

2022-09-04

If y varies directly as x and y = -24 when x = 8, then how do you find y when x = 10?

Answer & Explanation

Zayden Dorsey

Zayden Dorsey

Beginner2022-09-05Added 18 answers

the initial statement is y∝x
to convert to an equation multiply by k the constant of variation
y = k x
to find k use the given condition
y=−24 when x=8
y = k x k = y x = - 24 8 = - 3
equation is y=−3x
when x=10 then
y = - 3 × 10 = - 30

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