Question 938024: refer to the following graph of a function f.
http://i.imgur.com/fD2qbTl.png
(A) Find f(-2) to the nearest integer.
(B) Find all values of x, to the nearest integer, so that f(x) = -4.
Answer by jim_thompson5910(35256)   (Show Source):
You can put this solution on YOUR website! A) Locate x = -2 on the x axis. Draw a vertical line through this x value. Notice how this vertical line and the blue curve cross at about (-2, 6). So f(-2) is approximately 6.
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B) Draw a horizontal line through y = -4. This line cuts through the function at around (-6, -4), (2, -4) and (4, -4). These are approximations.
So x is approximately -6, 2, and 4 when y = -4
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