Question

if y=-5 when x=15,find x when y=3

Answer 1

(5, 8) and (10, y)
what is the value of Y?

Answer 2

@idaliwow Use the proportion method. :)

\[\frac{ -5 }{15} = \frac{ 3 }{ x }\]

By cross multiplication, you will get x = -9

Answer 3

The second one goes like the first. Just use the proportion method. Try it first then let me see what you'll find. :)

Answer 4

16 ...thank you

Answer 5

Anytime. Goodluck! :)

Answer 6

You have given insufficient information here y can be any value.

Answer 7

Insufficient? There's nothing wrong with it.

Answer 8

oh sweets how could u give the other value of y without knowing the function it is not necessary that the two values are proportional