Question

I dont understand this linear equation

l=40-w

Answer 1

What you are trying to do in this??

Answer 2

If l and w are the length and width then:

Sum of length and Width is 40..

Answer 3

Where is the x

Answer 4

For example
y=mx+b
THis would be

y=40-b right but dont we need the x like the y

Answer 5

Look at the graph...



linear equation need not be x..
it says different values of l at various w`s...

for eg.. l = 40 - W

1. w= o, so l = 40...
2. w = 20, so l = 20
3. w = 40, so l = 0

the graph is linear...