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Scorpion4ik [409]
2 years ago
6

Do the following points represent a function? (0,2) (1,4) (0,4) (3,9) (5,8)​

Mathematics
1 answer:
photoshop1234 [79]2 years ago
8 0
<h3>Answer: No, this isn't a function.</h3>

Why not? Focus on the two points (0,2) and (0,4)

We have the x value x = 0 show up twice. Any time x repeats itself like this, it leads to "not a function" as the result.

In other words, the input x = 0 leads to multiple outputs y = 2 and y = 4 at the same time. A function is only possible if every x input leads to exactly one y output.

If you are a visual learner, then plot all of the points on the same xy grid. Then notice how (0,2) and (0,4) fail the vertical line test to show we don't have a function.

Side note: The y values can repeat themselves in a function.

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Which graph represents the solution set of this inequality?
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In the figure, PQ is parallel to RS. The length of RP is 2 cm; the length of PT is 18 cm; the length of QT is 27 cm. What is the
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Step 1    

<u>Find the value of TS</u>

we know that

if PQ is parallel to RS. then triangles TRS and TPQ are similar

so

\frac{TR}{TP} =\frac{TS}{QT}

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TS =\frac{TR*QT}{TP}

we have

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substitute

TS =\frac{20*27}{18}  

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Step 2

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we know that

SQ=TS-QT

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QT=27\ cm

substitute

SQ=30\ cm-27\ cm=3\ cm

therefore

<u>the answer is</u>

the value of SQ is 3\ cm

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There were 450 people at a play. The admission price was $2 for adults and $1 for children. The admission receipts were $680. Ho
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Adults= 110

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Given data

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from 1

x= 450-y

put this in 2

2(450-y)=680

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