# 2 The value of y is directly proportional to the value of x. If y = 35 when x = 140, what is the value of y when x=70

1 answer

###### Question:

2 The value of y is directly proportional

to the value of x.

If y = 35 when x = 140, what is the

value of y when x=70

to the value of x.

If y = 35 when x = 140, what is the

value of y when x=70

## Answers

Answer:y = 17.5Step-by-step explanation:Given that y is directly proportional to x then the equation relating them isy = kx ← k is the constant of proportionTo find k use the condition y = 35 when x = 140, then35 = 140k ( divide both sides by 140 )0.25 = ky = 0.25x ← equation of proportionWhen x = 70, theny = 0.25 × 70 = 17.5

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