Which relation is a function?

{ (9, - 1), (-1, 9), (9, 2), (2, - 1) }

{ (5, - 7), (4, 6), (-3, 8), (5, 9) }

{ (8, - 4), (-4, 8), (-4, - 8), (-8, 4) }

{ (2, 3), (-2, 3), (3, 2), (-3, - 2) }

An experimenter is interested in hyperactivity and diet. She believes that the greater the amounts of certain food dyes that are consumed, the more hyperactive a child will be.

From a simple repetitive pulse to the most intricate combination of cadences, rhythm can be expressed through any of the elements of art, whether single or in combination. Order these representations of groups of people according to their:___.1.

Which is larger 2.4 or 2.04

Lindy bought a DVD for $19.90. Sales tax is 6%. What is the total cost of her purchase? (show work)

The angle of elevation from the bottom of a scenic gondola ride to the top of a mountain is 31 degrees.

Which is an example of dealer incentives? A. Sun car dealers pay $18,000 to Galaxy car manufacturers for a car worth $20,000. B. Sun car dealers pay $21,000 to Galaxy car manufacturers for a car worth $20,000. C.

What is five divided by seven answer this question immediately

Henri bought a swim suit at a cost of $8. Which statements are true regarding the cost of the suit? If the selling price is marked up by 25 percent, the new price will be If the selling price is marked up by 40 percent, the new price will be If the

Apply the distributive property and the greatest common factor to write an equivalent expression 32k+24

If you enroll a six-sided die, what is the probability that you will obtain a number greater than 2