Question 20893: The number –5 is in the range of the function f(x) = 4x – 9. Find an element in the domain that corresponds to –5 and show as an ordered pair.
Answer by rapaljer(4671)   (Show Source):
You can put this solution on YOUR website! If the number -5 is in the range, this means that f(x) = -5. The question is to find the element in the domain, that is, find the value of x that corresponds to y=-5.
f(x) = 4x - 9
-5 = 4x -9
Add +9 to each side:
-5 + 9 = 4x -9 +9
4 = 4x
Divide by 4:
x= 1
Ordered pair: (x,y) = (1, -5)
R^2 at SCC
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