Choose the equation that represents the graph below: graph of a line passing through points 0 comma 6 and 9 comma 0

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done

Graph the line with the given slope m and y-intercept b. m=-3,b=1

Yvaries inversely as x. y =12 when x=5. find y when x=4