how do i know if its a linear equation?

Question

thanks

Answer 1

linear equation has unknowns is power of 1
example x, y , a ,b

quadratic equations has unknown to the power of two
example x^2, y^2,

Of course you got to simplify the given equation first to find out.
Example: x(1+x)= 2 seems to be linear because all x are to the power of 1, but if you get rid of the parenthesis you get x+x^2=2
so this equation is quadratic.

Answer 2

Linear equations will not have any exponent on the x-term.

In reply to Muck12's comment, linear equations can also be written in standard form, which is ax+by+c=0, where a is the slope, and c is the y intercept. The easiest way to tell is looking at the exponent on the x term.

Answer 3

Look at the slope, if it's a constant then it's linear.

Answer 4

if its in the form
ax+b
(a being the slope of the line)
and
(b being the y-intercept)

Answer 5

It doesn't bend? ;)