Question

Find an equation of variation in which y varies inversely as x and y = 100 when x=25

Answer 1

y varies inversely as x

so

y = k/x

Answer 2

it tells us that when x = 25, y = 100

so

y = k/x

y = k/25 .. plug in x = 25

100 = k/25 .. plug in y = 100

now solve for k

Answer 3

i got 2500 but i feel like thats wrong?

Answer 4

2500 is correct, so the equation is y = 2500/x

Answer 5

notice if you plugged in x = 25, you would get y = 100

Answer 6

ahhh ok thank you

Answer 7

you're welcome