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25 POINTS

A piecewise function f(x) is defined as shown.

f(x) = -5/4x = 90

Which table could be used to graph a piece of the function?

25 POINTS A piecewise function f(x) is defined as shown. f(x) = -5/4x = 90 Which table-example-1
User Grmmgrmm
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2 Answers

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substitute the values of x from each table and see which values fit

For example in table d when x = 40 y = (-3/8)*40 + 75 = 60 which is the result given in table d

The other 2 values also fit table d

Answer is table d.
User Roger Alien
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8.0k points
1 vote

Answer:

The answer is D

Explanation:

We are going to try all the answers on the choices to find the right choice.

Choice A:

We will start with 0:


-(5*0)/4+90=90

That is correct lets try 16:


-(5*16)/4+90=70

It can be seen that choice A is incorrect.

Choice B:

We tried 0 in above and it gave 90. So, we will start with 40:


-(3*40)/8+75=60

It can be seen that choice B is incorrect.

Choice C:

We tried 40 in above and the function gave 60.

It can be seen that choice C is also incorrect.

Choice D:

We tried 40 in above and the function gave 60. Therefore, we will start with 160:


-(3*160)/8+75=15

Lets try the last number 200:


-(3*200)/8+75=0

It can be seen that choice D is correct.

User Reasurria
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