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aivan3 [116]
3 years ago
5

Find the range of f(x) =2x-6 for the domain (-2,1,5,8)

Mathematics
2 answers:
Effectus [21]3 years ago
3 0

Answer: range: (-10,-4,4,10)

Step-by-step explanation:  range is y value and domain is x value

f(x) will be ur y

in place  of x put the value of domain

example:

  1. f(x) =2x-6

             y=2(-2)-6

           = <u>-10</u>

2) y=2[1]-6

     = <u>-4</u>

<u>like that do the rest of the working to find ur range.</u>

Simora [160]3 years ago
3 0

Answer:

the range is : (-10,-4,4,10)

Step-by-step explanation:

calculate :

f(-2) = 2(-2) -6 = -10

f(1) = 2(1) -6 = -4

f(5) = 2(5) -6 = 4

f(8) = 2(8) -6 = 10

the range is : (-10,-4,4,10)

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7x + 2y=24<br> 8x + 2y=30
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Answer:

x=6 y=-9

Step-by-step explanation:

  • Layer the equations on each other as you would in a subtraction problem:

               8x + 2y=30

               7x + 2y=24  

  • Subtract the equation just like you would normally. This should leave 1x=6 or x=6.
  • Now that you have your x value, plug it in as x for one of the equations. For the 2nd equation, this leaves:

               42+2y=24 then

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  • Double check your y value by plugging x=6 into the first equation. This should also leave y=-9.

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