State the definition of a function?

1 answer:

6 0

A function is a special relationship where each input has a single output.

It is often written as "f(x)" where x is the input value.

Example: f(x) = x/2 ("f of x is x divided by 2") is a function, because each input "x" has a single output "x/2":
• f(2) = 1
• f(16) = 8
• f(−10) = −5

https://www.mathsisfun.com/definitions/function.html

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Answer:

4.5

Step-by-step explanation:

13.5 - 9 = 4.5

18 - 13.5 = 4.5

22.5 - 18 = 4.5

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3 years ago

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3 years ago

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Natali5045456 [20]

$3(x - 3) + 8x = 5(2x + 1)$

Expanding the terms,

$3(x - 3) + 8x = 5(2x + 1) \\ 3x - 9 + 8x = 10x + 5$

Collecting like terms,

$3x - 9 - 8x = 10x + 5 \\ 3x - 8x - 10x = 5 + 9$

Evaluating the terms,

$3x - 8x - 10x = 5 + 9 \\ - 15x = 14$

Divide both sides by -15,

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3 years ago

Read 2 more answers

What are the domain and range of this function?

RUDIKE [14]

<h3>Answer: Choice D</h3>

Domain: all real numbers
Range: $y \ge 1$

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Explanation:

The domain is the set of allowed x inputs. We can plug in any x value we want as the graph stretches on forever to the left and to the right. There aren't any division by zero errors or any issues like that to worry about, so that's why we don't kick out any x values from the domain.

The domain being all real numbers translates to the interval notation $(-\infty, \infty)$ which is basically saying $-\infty < x < \infty$