1.how do systems of non-linear equation represent real life situation? 2.what are the differences between non-linear and linear systems of equations?

Yuki T,

Non-linear means not straight lines, right? The real-life situations I think of are exponential equations (such at y = x^2). Jimmy wants to hand out fliers. He hands out fliers to two of his friends. He asks his friends to pass out fliers to two of their friends, who in turn will pass them along to two of their friends.

Jimmy - 1

Jimmy's 2 friends - 2

Jimmy's 2 friends 2 friends - 4

16...64...

It grows exponentially. Think pyramid schemes.

Of course, there are other non-linear equations. For example, some people pay rent based on their income. Someone who earns $10,000 might pay 8% while someone who earns $56,000 might pay 14%.

The difference between linear and non-linear is simple- straight lines with no breaks vs. lines that aren't straight or lines that have breaks.

Hope this helps!

true? is that what you're asking or do you mean something else?

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".