Which is a linear graph, and which is a nonlinear graph? How do you know?
Orange is linear; blue is nonlinear
Blue is linear; orange is nonlinear
Both are linear
Both are nonlinear

Blue is linear

Step-by-step explanation:

For lines to be linear on a graph, they have to follow these 2 rules:

-be a straight line

-be written in the form of y=mx+b

Therefore, blue is linear and orange is nonlinear

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^