Range of a function without graph

  • Thread starter Brosip
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  • #1
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Homework Statement



Determine the range of each function without graphing it

(a) -(y-2)=4x-1

(b) y= 3(0.8)-x - 5






The Attempt at a Solution



I know it may be easy and all, but i was at a doctors appointment when we learned how to do this
 

Answers and Replies

  • #2
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Off the top of my head - find the inverse and determine its domaine.
 
  • #3
HallsofIvy
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Homework Statement



Determine the range of each function without graphing it

(a) -(y-2)=4x-1
-y+ 2= 4x- 1
-y= 4x- 1- 2
y= 2- 4x- 1

Now if you know that the range of "ax", for any number a (other that 1 or 0) is (0, infinity), the range of this function should be easy.

(b) y= 3(0.8)-x - 5[/sup]
Same thing.

The Attempt at a Solution



I know it may be easy and all, but i was at a doctors appointment when we learned how to do this
 

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