3 years ago

2.Which set of ordered pairs does NOT represent a function?

Mathematics

2 answers:

algol [13]3 years ago

8 0

Answer:

B again

Step-by-step explanation:

you have (8,-8) and (8,4), same reason as the one before

Mashcka [7]3 years ago

3 0

Answer:b

Step-by-step explanation:

I just took the test

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Identify as a direct variation, inverse variation or neither. is the cost of gasoline a direct or inverse variation with respect

r-ruslan [8.4K]

I would say direct because the more gallons of gasoline used, the bigger the cost.

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3 years ago

Solve for x & y. 30x−42y=−6 and 5x−7y=−1

vladimir1956 [14]

Um.. Both of those equations are the exact same. Divide both sides of the first equation by 6. You get:

$\frac{30x - 42y}{6} = \frac{-6}{6} \\ 5x - 7y = -1$

That is the exact same as the second equation. This system has an infinite number of solutions. 5x - 7y = -1 is a line, so basically every point on that line is a solution to the system.

For example, $x = 0$ and $y = \frac{1}{7}$ would work, but so would $x = 1$ and $y = \frac{6}{7}$