A line passes through the points (2,13) and (9,20). Write a linear function rule in terms of x and y for this line. The linear function rule is y=I​

7x+8y=-18, 4x-9y=-3 solve the system of equations

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

∆red ≅ ∆ by rule will give brainiest if possible