## douglas12 Group Title y varies directly as to x. when x = -1.5 y = 9. Find y when x = 6 one year ago one year ago

• This Question is Open
1. jdoe0001 Group Title
2. jdoe0001 Group Title

direct variaion y = $$\bf k$$x what's "k"? well, when x = -3/2, y = 9, thus 9 = $$\bf k$$(-3/2) solve for "k" to see what "k" is

3. douglas12 Group Title

k is -3/2

4. jdoe0001 Group Title

hmmm, let's see 9 = k(-3/2) what would that give you cross multiplying?

5. douglas12 Group Title

-1.5

6. jdoe0001 Group Title

$$\bf 9 =k \times -\cfrac{3}{2} \implies 9 = \cfrac{3k}{-2}$$ try cross multiplying :)