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16 March, 17:54

Which of the following functions has a graph that is a line?

f (x) = x

f (x) = x2

f (x) = |x|

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  1. 16 March, 17:59
    0
    f (x) = x

    Step-by-step explanation:

    f (x) = x is of the form y = mx + b.

    y = mx + b is the slope-intercept form of the equation of a line, so its graph is a line.

    f (x) = x^2 has a variable to the second power, so its graph is a parabola, and not a line.

    f (x) = |x| has an absolute value, so its graph is shaped like a V. It is not a line.
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