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Algebra

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1. Find the slope of the graph of the linear function f with f(0)=4 and f(3)=13.

I have no idea how to do this.. :(
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Evaluate the function when x=3, x=0, and x= -2.

2. f(x)=-1/2x+3
my answers: 1.5, 3, 1

3. h(x)=5.5x+4
my anwers: 20.4, 4, 7

4. g(x)=1/8-4
my answers: -3.625, -4, -4.25

5. k(x)=14-4x
my answers: 2, 14, 22

Please check if numbers 2-5 are correct. Thanks.

  • Algebra -

    on the first.

    slope= (f(3)-f(0))/(3-0)

    the others are correct, but I would have done 4 in fractions.

  • Algebra -

    Thanks a lot!! =))

  • Algebra -

    KukuMonkey, double check you work when you work with negative numbers.

    2.
    f(x)=-1/2x+3
    f(-2)=4

    3. h(x)=5.5x+4
    my anwers: 20.4, 4, 7
    h(3)=20.5
    h(0)=4 (OK)
    h(-2)=-7

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