Select all equations that represent a linear function. y = x(2x - 3)
y = 0.4x - 2.2
y = x/3
3x + 9y = 54
2/x - 8 =y

also, could someone explain what these linear functions are?

Which of the following is the rational exponent expression of 6 root f

Farnesene is a sesquiterpene. how many different isomers arising from double-bond isomerizations are possible? g

An apartment has a replacement cost of $950,000 and contents valued at $1,450,000. it has a classification of a and a territory rating of 3. find the annual premium a) $10,185 b) $9,230 c) $3,155 d) $13,830