Question

Which of the following represents inverse variation?

y equals three minus x

y equals two divided by x

y divided by x equals negative five

y equals negative two-thirds x

Answer 1

@Jack1

Answer 2

Medal to who answers best! C:

Answer 3

inverse variation is inversly proportional
so eg doubling x causes y to halve.
which one fits that scenario?

Answer 4

so opposite effect, if you do ___ to one opposite happens to the other

Answer 5

a) y equals three minus x
so equation:
y = 3 - x

so if y = 10, and we double y, what happens to x
y = 3 - x
10 = 3 - x
x = -7

so double y
2y = 2(3 - x)
20 = 6 - 2x
-14 = 2x

so y is directly proportional to x in this
doubling y doubled x

Answer 6

Another way to think of it:

If you can write y=k/x, then that is inverse variation.

If you can write y=kx then that is direct variation

Answer 7

inverse variation is when on increasing one variable the value of the other decreases. like y = k/x