What is the constant of variation, k, of the direct variation, y = kx, through (–3, 2)?

k = –k equals negative startfraction 3 over 2 endfraction.
k = –k equals negative startfraction 2 over 3 endfraction.
k = k equals startfraction 2 over 3 endfraction.
k = k equals startfraction 3 over 2 endfraction.