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vfiekz [6]
3 years ago
12

The table below shows the outputs y for different inputs x:

Mathematics
2 answers:
vovangra [49]3 years ago
4 0
<h2>Answer with explanation:</h2>

Part A:

  • A relation is said to be a function where each input has only a single output.

We usually take the input variable as 'x' and the output variable as 'y'.

In the given table, we can see that 1 is the input value corresponding to 4 and 2 both.

i.e.  one input value corresponds to two different output values that contradicts the definition of the function.

Thus  the given table doesn't represent any function.

Part B: Given : The total cost f(x), in dollars, for renting a paddle-boat for x hours is shown below:

f(x) = 20 + 10x

At x= 120 ,  f(120) = 20 + 10(120)=20+1200=1220

It represents that the total cost  for renting a paddle-boat for 120 hours is $1220.

igor_vitrenko [27]3 years ago
3 0
Part A)
The table doesn't represent y as a function of x.
Why? <span>One reason is that 1 or 3 is the first element in more than one ordered pair.
 Part B)
f(x) = 10x + 20
f(120)= 10*120 + 20 = 1200 + 20 = 1220 
</span><span>f(120) represents cost of boating for 120 hours.</span><span>
 </span>

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