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Ed asked in Science & MathematicsMathematics · 1 decade ago

Exponential graph question?

A graph has the formula y=ab^x.

The curve passes through the points (0.5,1) and (2,8)

The point (-0.5,k) lies on the curve.

Find the value of k.

2 Answers

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  • 1 decade ago
    Favorite Answer

    Whenever you multiply by a negative exponent, the answer will be the reciprocal of the positive exponent. When x= 0.5, y= 1, so when x(the exponent) is -.5, y=1 still. So k=1

    hope I helped and I hope it made sense!(:

    -Lil(: <33

  • 1 decade ago

    Use the gradient point method and solve for the unknown

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