Question

The equation yˆ=−2.58x+566.67 models the distance a driver can see in feet, where x is the age of the driver in years. According to the regression equation, how far can a 30 year old driver see in feet?

Answer 1

489 to the nearest foot.

Explanation:

y = -2.58x + 566.67

x = 30:

y = -2.58*30 + 566.67

= 489 to nearest foot.

Answer 2

A 30 year old driver can see 489.27 feet

Explanation:

The equation yˆ=−2.58x+566.67 models the distance a driver can see in feet, where x is the age of the driver in years.

WE need to find out the height when x is 30

Plug in 30 for x and find out y

y=−2.58x+566.67

Replace x with 30

y=−2.58(30)+566.67 = 489.27

A 30 year old driver can see 489.27 feet