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If f (x) = minimum of (3x + 5, 10 - 2x), what is the maximum possible value of f (x)?

  1. 1
  2. 3
  3. 6
  4. 8
in Quantitative Aptitude 7.9k points 234 899 1073 1.3k views
0
If you graph both of these lines you will see that they 3x+5 slopes up and 10 - 2x slopes down with them intersecting at the point (1,8) making a big x on your graph.

So the function value is maximum at x=1.

2 Answers

1 vote
Put x = 1, we get f(x) = 8.
8.3k points 55 131 178
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4.8
410 points 2 4

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