6. Tell whether the lines are parallel, perpendicular, or neither. (a) Line 1: through (-1,4) and (2,5);
Line 2: through(-6,2)and(0,4)

(b) Line 2: through (-3,2) and (5,0);
Line 2: through (-1,-4) and (3,-3)

Cal's go cart has a gas tank with the dimensions shown below. he uses a gas can that holds 11 gallon of gas, to fill the go cart tank. 11 gallon = 231 inches^3 how many full gas cans will it take to fill the go cart's gas tank?