Question

The variables x and y vary directly, and x=3 and y=-4.
1. Write an equation that relates to x and y.

2. Find y when x = 2.

Answer 1

1. y=ax
-4=3a
=>a=-4/3
y=(-4/3)*x

2.
y=(-4/3)*2=-8/3

Answer 2

Many thanks! ^^

Answer 3

yw

Answer 4

And if it was to be x=9 and y=2 instead, would the equation look like this?
y=(2/9)*x

Answer 5

yes

Answer 6

kk thanks