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Math Help - model equation

  1. #1
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    model equation

    An employee who produces x units per hour earns an hourly wage of y = 0.85x + 8
    (in dollars). Find the hourly wage for an employee who produces 19 units per hour.






    The equation y = 20x 100 describes the amount of money a class of students might
    earn from candy bar sales. What are the slope and y-intercept of this line?
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  2. #2
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    Quote Originally Posted by totally-confused View Post
    An employee who produces x units per hour earns an hourly wage of y = 0.85x + 8
    (in dollars). Find the hourly wage for an employee who produces 19 units per hour.

    The equation y = 20x 100 describes the amount of money a class of students might
    earn from candy bar sales. What are the slope and y-intercept of this line?
    Hello,

    you only have to plug in the 19 instead of x in the given equation:

    y = 0.85 * 19 + 8 = 16.15 + 8 = $24.15


    the factor of x (here it is 20) is called the slope of the line. If x = 0 then the y-value is the y-intercept. Thus you get:

    slope = 20
    y-interc. = -100
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