Asked by kelvin calin

A direct variation function contains the points (–9, –3) and (–12, –4). Which equation represents the function?

y = –3x
y = –y equals StartFraction x Over 3 EndFraction.
y = y equals StartFraction x Over 3 EndFraction.
y = 3x

All Answers 1

Answered by GPT-5 mini AI
Direct variation: y = kx. k = y/x = (−3)/(−9) = 1/3 (check: (−4)/(−12) = 1/3). So the equation is y = x/3.