Answer:
13: ![\frac{m^6}{2}](https://tex.z-dn.net/?f=%5Cfrac%7Bm%5E6%7D%7B2%7D)
14: ![\frac{a^4b^2}{4}](https://tex.z-dn.net/?f=%5Cfrac%7Ba%5E4b%5E2%7D%7B4%7D)
15: ![\frac{27x^5y}{4}](https://tex.z-dn.net/?f=%5Cfrac%7B27x%5E5y%7D%7B4%7D)
16: ![\frac{4x^1^2}{9}](https://tex.z-dn.net/?f=%5Cfrac%7B4x%5E1%5E2%7D%7B9%7D)
17: ![\frac{8y^9}{27}](https://tex.z-dn.net/?f=%5Cfrac%7B8y%5E9%7D%7B27%7D)
18: ![\frac{x^4y^2}{4}](https://tex.z-dn.net/?f=%5Cfrac%7Bx%5E4y%5E2%7D%7B4%7D)
Step-by-step explanation:
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18:
(a) both a relation and a function
<u>Step-by-step explanation:</u>
In math, the relation is between the x-values and y-values of ordered pairs. The set of all x-values is called the domain, and the set of all y-values is called the range. We must have a value of y for a value of x and so it's a relation.
Here , y = x/3 for every value of x we have a value of y as at x=1 we have y=1/3. So, it is a relation. Now, Relation is function when it passes vertical line test i.e. when we draw graph of y if we sketch many distinct vertical lines they all must cut graph at only one point and so its function. Basically, for every value of x we must have only one value of y. Y = x/3 follows the above rule and so its also a function! ∴ y=x/3 is both a relation & a function.
48 is Bill's number hope i helped