larina recieved a $50 gift card to an online store. she wants to purchase some bracelets that cost $8 each. there will be a $10
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From the pairs of x,y, if the set has two "x" of the same value, that is, "x" repeats, or an x-repeat, then is NOT a function
so, the group that doesn't have any x-repeats, is a function, now let's check
so, the group that doesn't have any x-repeats, is a function, now let's check