{(-9,3), (8,7), (-9, -9), (2, 4)}
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Explanation:
To find an example of a non-function, we look for (x,y) points where x repeats itself. That occurs in choice D where we have (-9,3) and (-9,-9) in the same function set.
The input x = -9 leads to multiple outputs y = 3 and y = -9 simultaneously. This is not allowed if we wanted a function.
A function is only possible if each input x leads to exactly one y output.
So this is why we look for repeated x values when trying to find non-functions. Choices A, B and C all have unique x values that don't repeat, which means those choices represent functions.
Side note: The y values can repeat, but the function won't be one-to-one.
Use the expression 11 + 9k + 6n. Tell whether each statement is True or False. T or F: the expression has 3 terms. T or F: In the expression, 11 is a coefficient. T or F: In one of the terms, 6 is a factor. T or F: The expression has two variables.
The classification of the terms in the expression is given as follows:
True: the expression has 3 terms.True: in the expression, 11 is a coefficient.True: In one of the terms, 6 is a factor.True: The expression has two variables.First statementIn an addition, each term involved in the addition is called a term. Hence, the expression has three terms, which are given as follows:
11.9k.6n.Hence the first statement is correct.
Second statementThe coefficients of the expression are:
11.9.6.Hence the second statement is correct.
Third statementIn the third term, 6n is divisible by 6, hence six is a factor of the term, and the third statement is correct.
Fourth statementThe variables of the expression are k and n, hence two variables, and the fourth statement is correct.
More can be learned about factors of expressions at https://brainly.com/question/19865807
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