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Physics/maths - A-Level

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    Honestly don't get what it is asking
    Could someone explain to me please
    Task:
    The table below shows the formula for a particular physical relationship, and what has been plotted on the xx and yy axes. You should write down (in terms of the letters in the formula) what the y-intercept and gradient will be. If the graph is not going to be a straight line, write 'not straight' instead of a gradient.

    Answer to number one (to maybe help you help me)
    y-intercept is ϵ (epsilon) - don't even know what that means
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    I sort of get how to find the gradient
    Would it just be like
    change in y / change in x
    so like i rearrange to get y / x then whats left is the gradient or what
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    YOu just need to think in terms of y=mx+c
    so for V= E-Ir, V=y, E=c, m=-r, and x=I.
    so y intercept is when x=0 so V=E. The symbol for the maximum E is epsilon. Gradient = -r as this is 'm'

    make sense?
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    (Original post by pippabethan)
    YOu just need to think in terms of y=mx+c
    so for V= E-Ir, V=y, E=c, m=-r, and x=r.
    so y intercept is when x=0 so V=E. The symbol for the maximum E is epsilon. Gradient = -r as this is 'm'

    make sense?
    Ohhh, yh makes sense!
    Thanks
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    (Original post by pippabethan)
    YOu just need to think in terms of y=mx+c
    so for V= E-Ir, V=y, E=c, m=-r, and x=r.
    so y intercept is when x=0 so V=E. The symbol for the maximum E is epsilon. Gradient = -r as this is 'm'

    make sense?
    x = I right?
    Guessing it was a mistake or is it actually r
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    (Original post by AdeptDz)
    x = I right?
    Guessing it was a mistake or is it actually r
    Oops yeah I did mean x=I. I'll correct it now
 
 
 
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