For children between ages 6 and 10, height y (in inches) is frequently a linear function of age t (in years).

Question

The height of a certain child is 49 inches at age 6 and 51.5 inches at age 7.

 

a) Express y as a function of t. 

 

b) Sketch the line in part (a). 

 

c) Predict the height of the child at age 10.

 

I figured it was y(t)=2.6t+33.4 after obtaining the slope from points (6,49) and (7,51.6) and that the child would be 59.4 inches at age 10, but the program I am working through marked it as incorrect. I just want to know what I did wrong. 

 

Thank you for your time and assistance!

Answer 1

Check your subtraction for the slope again.  (51.5 - 49)

Looks like you're doing everything else just fine though!  Keep it up!