1/5 of 3 .. => 1/5 * 3 is same as 3 * 1/5 .. => 1/5*3 = 3/5 and 3* 1/5 also = 3/5 ... here t<span>he </span>commutative property of multiplication is used ... which tells us that it doesn't matter in what order you multiply<span> numbers. The formula for this </span>property <span>is a * b = b * a. .... so if we know these properties it will be easy to figure out the answer ...
C (third graph, the parabola); To find if it is a function or not draw a vertical line on the graph. If the vertical line could never intercept the figure more than once anywhere on the graph then it is a function.
