for those of you who are smart in math :\?

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SuzanNissan

New member
i need help with these i have 20 problems. i just didn't know how to these 4

i need to write an equation of the direct variation that includes the given point
1) (2,2)

2) (-8,-4)

3) (3,-1

4) (-5,3)
@ luke heary me too i was learning this too but i had to go to the office while the class was going over it
 
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Empire539

New member
A direct variation equation is one in the form of y = kx, where k is some constant. Simply plug in the x-value and the y-value into that equation, solve for k, and then rewrite the equation.

Example:
y = kx
(2) = k(2)
k = 1
Thus; y = 1x = x.

y = kx
(-4) = k(-8)
k = ½
Thus: y = ½x
 
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