SOLUTION: Given the following equation: - 4x + 5y = 20, rewrite in functional notation, then determine the value of f(-2).

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Question 4126: Given the following equation: - 4x + 5y = 20, rewrite in functional notation, then determine the value of f(-2).
Answer by ivankst(3) About Me  (Show Source):
You can put this solution on YOUR website!
First let's write this in functional notation.
-4%2Ax%2B5%2Ay=20
5%2Ay=4%2Ax%2B20
y=%284%2F5%29%2Ax%2B4
f(-2) = %284%2F5%29%2A%28-2%29%2B4+=+-%288%2F5%29%2B4+=+%28-8%2B20%29%2F5+=+12%2F5+