Which set of ordered pairs represents a function?
{(-1,-6), (-1, -2),(5, -1), (7, -2)}
{(5,-9), (-2, - 7),(5,4), (3, 7)}
{(4,-4), (-4,-4), (-7, -2), (-6,6)}
{(-4,7), (-4, - 7),(-3,6), (-6, -6)}

Weak battery is considered to be a part of routine a. inspection b. wear and tear c. maintenance d. check

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

If you have the following equation, 2/3x+5/6-x=2-3/4x what would you multiply each term by to get rid of all the fractions