.
Direct Variation is y = k/x
Direct variation is y = kx
Direct variation always passes through the origin (0,0)
Direct variation has a constant of proportionality, k.
Y = 4x
Y = (1/4)x
Y = 12x
Y = 20x
Y = 9/5
Y = 180
Y = 14
Y = 45
True
False
$80
$6,000
$1,200
$12,000
Y variable
X variable
Constant of variation
Product
Y = (3/4)x
Y = (4/3)x
Y = 1x
Y = -1x