Thread: 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?

Originally Posted by totally-confused

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