Firstly we are looking for two variables x,y so that we need two formulas .
the second formula is missing
The equation should be y= -2x+5.
The answer is 96. just multiply 6 *2 =12*2=24*2=48*2=96
Without knowing the shape selection you have i cant really say anything. But with a square you wouldnt have any whole numbers, nor would a triangle give you whole number, than again no shape that i can think of would give whole numbers.