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    f(X)=-5X+4

    0  Views: 795 Answers: 2 Posted: 12 years ago
    johan vargas

    f(X)=-5X+4
    chelleanne

    Is you graphing? Is you looking for the x and y intercepts?

    2 Answers

    f (X)= -5X +4


    divide both sides of th equation by X


    f = -5 + 4


    f = -1

    f(x) = -5 + 4  is another way in saying..........


    y = -5x + 4    >    -5 is the slope and 4 is the y-intercept


    Graph


    ""

    Bob/PKB

    Looks like it passes through at -1. Graphing and intercepts go right over my head
    chelleanne

    The slope of the line passes through points (0, 4) and (2, -6) I chose those two points because the graph has even numbers. Just give x a value.
    -5(2) + 4 = -6 > (2, -6)
    -5(0) + 4 = 4 > (0, 4)
    Bob/PKB

    OK, I see the two places where the line passes. You assigned a value to "X"? Could you have chosen ANY number for "X"?
    chelleanne

    Yes! This graph have double digits. A single digit graph will have the same outcome. If
    x = 1 then y = -1
    -5(1) + 4 = -1 > (1, -1)
    x = -2 then y = 14
    -5(-2) + 4 = 14 > (-2, 14)
    x = 3 then y = -11 > (3, -11)
    The line will pass through all these points.
    Bob/PKB

    Thanks for explaining. This is something to refer to again.


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