SOLUTION: I don't understand this question on my homework. Help please! I need the linear function.. Model each situation with a linear function and graph. Is it reasonable to include neg

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: I don't understand this question on my homework. Help please! I need the linear function.. Model each situation with a linear function and graph. Is it reasonable to include neg      Log On


   

Question 807625: I don't understand this question on my homework. Help please! I need the linear function..
Model each situation with a linear function and graph. Is it reasonable to include negative numbers in the range?
Natalie spends 90 minutes doing her math and english homework. The time he spends on her math homework is a function of the time she stands on her english homework
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
x= time spent doing English homework (in minutes).
y= time spent doing Math homework (in minutes).
Of course, x%3E=0 and y%3E=0 .
It is not reasonable to have negative numbers for x or y .
Negative values do no make sense for either variable.
x%2By=9 --> highlight%28y=90-x%29
The domain and range of that function are
0%3C=x%3C=90 and 0%3C=y%3C=90