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Question
If f(x) =bx - 7 and f(-1) = 4, then b = ______.
Options
11
-3
-11
3
MCQ
Fill in the Blanks
Solution
If f(x) =bx - 7 and f(-1) = 4, then b = -11.
Explanation:
f(x) = bx - 7
⇒ f(-1) = b(- 1) - 7 = - b - 7
f(- 1) = 4
⇒ 4 = - b - 7
⇒ b = - 11
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Algebra of Functions
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