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4.The point (2, 8) is on the graph of f(x) = x3. What is the value of b if the point (0.5, 8) is on the graph of f(bx)?
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4.The point (2, 8) is on the graph of f(x) = x3. What is the value of b if the point (0.5, 8) is on the graph of f(bx)?

User Krauxe
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since you know that when x = 2, y = 8, when you replace x with xb: 8=(xb)3 x has been replaced by xb, so xb must equal 2 and then substituting in 0.5 for x, you can solve for b 0.5b=2
User Nigel Harper
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