Question

data comparing a student’s age and their typing speed. The equation for the line of best fit is given as y = -1.4x + 117.8, where x is the “age in years” and y is the “typing speed. If you are 25 years of age, what is your typing speed?

Answer 1

Your typing speed is 82.8 WPM.

Explanation:

Lets list was we know:

x = age in years

y = typing speed

We know the equation
`y=-1.4x+117.8` will produce the result for y, the typing speed. If x is the age in years, and you are 25 years old, then all you have to do is substitute 25 into the equation.

`y=-1.4(25)+117.8`

Evaluate

`y=-35+117.8`

`y=82.8`

Your typing speed is 82.8 WPM.