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jeyben [28]
2 years ago
10

Which relation is a function?

Mathematics
2 answers:
laila [671]2 years ago
8 0
The last graph (absolute value graph with a “v” shaped line) represents a function.

By definition, A function is a relation in which no two ordered pairs have the same input (or x-values) and different outputs (y-values).

A great way to determine whether a graph represents a function is by doing a Vertical Line Test.

The Vertical Line Test allows us to know whether or not a graph is actually a function. If a vertical line intersects the graph in all places at exactly one point, then the relation is a function.

To use the vertical-line test, imagine dragging a ruler held vertically across the
graph from left to right. If the graph is that of a function, the edge of the ruler would hit the graph only once for every x -value.

Attached is an edited version of the image you’ve uploaded where I did the Vertical Line Test (sorry for poor editing, I’m using my phone at the moment while typing this answer). The first graph with a circle shows that each vertical line contains more than 1 red point in it. It means that it the x-values have more than 1 corresponding y-value.

The 2nd graph (horizontal parabola) also failed the VLT because each vertical line drawn contained more than 1 point in it, meaning each vertical line drawn crossed the graph more than once.

The 3rd graph is a vertical line, which obviously failed the VLT because it contained more than 1 point.

The last graph (absolute value graph) passed the VLT because each vertical line contains only 1 point at most. Therefore, it is the correct answer.

Please mark my answers as the Brainliest if you find this helpful :)

Fudgin [204]2 years ago
6 0

It's the one second below the question because it does not have two outcomes for x. For example in a relation x could result in y = 2 or y = -2.

Hope this helps! :)

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Listed below are prices in dollars for one night at different hotels in a certain region. Find the​ range, variance, and standar
hodyreva [135]

Answer:

Step-by-step explanation:

Given is a list of prices in dollars for one night at different hotels in a certain region

To find range, variance and std deviation.

Mean 155.75

Standard Error 23.80782434

Median 150

Mode #N/A

Standard Deviation 67.33869616

Sample Variance 4534.5

Kurtosis -1.593759971

Skewness 0.344624422

Range 172

Minimum 86

Maximum 258

Sum 1246

Count 8

Thus we find range = 172 $.  This gives an idea about the lowest and highest difference.

Variance = Average of squares of deviations from the mean=  4533.329 $^2gives us an idea about the dispersion of data.  This helps to have an idea about the price rise or low in different hotels

Std deviation is square root of variance 67.33 $ shows an idea about the dispersion and also coefficient of variation as a ratio of mean to std deviation.

6 0
3 years ago
A pipe is 24ft long. It needs to be cut into pieces 3/4 long each. How many pipes can be made from the pipe?
liq [111]
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3 years ago
What is 2/8 + 5/12 as a fraction
nika2105 [10]

Answer:

8/12 or 2/3 if you want it simplified

Step-by-step explanation:

first simplify 2/8 to 1/4

then to make it have a common denominator of 12 you mutiply it by 3/3

this equals 3/12

3/12+5/12=8/12 or 2/3

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