Which of the following best describes the equation below?

y = -9x + 12
linear
nonlinear
neither linear nor nonlinear
both linear and nonlinear

Question

Which of the following best describes the equation below?

y = -9x + 12
linear
nonlinear
neither linear nor nonlinear
both linear and nonlinear

anonymous · Answer

Help!!!

ybarrap · Answer

Which do you think crazy?

anonymous · Answer

Hey don't call me crazy! ohhhh.....wait. I have a name you know. It's Katie.

anonymous · Answer

non linear?

ybarrap · Answer

Ok, which do you think?

ybarrap · Answer

why? Do you know what linear and nonlinear mean?

anonymous · Answer

linear- straight 
non linear - not straight

ybarrap · Answer

You are correct!

Nonlinear are equations like x^2, y^2, z^3, xy, yz, yz^2

Linear are equations like

2x+5y + z
x+3
2x-y

Linear equations are straight lines

ybarrap · Answer

So based on this excellent piece of knowledge, what is your BEST guess?

anonymous · Answer

C?

ybarrap · Answer

Technically, 2x+5y+z is a plane, but it's the same thing, just in 3-dimensional, we still say that it is "linear" because it is a "flat" plane

anonymous · Answer

So A?

ybarrap · Answer

The equation you have is 

y = -9x + 12

|dw:1391562200691:dw|

anonymous · Answer

It's straight and diagonal, so linear?

ybarrap · Answer

Yes! Diagonal doesn't matter, if you were on the line, walking on it, diagonal or not, you would be walking a "straight" line, right?

anonymous · Answer

So A?