Question 983857: How would I solve something like this???
1.Which of the following are NOT linear systems. In each case explain why.
a.−2x+3y=7.5
7x−2y=−2.5
b.x2+y2=4
2x+2y=7
c.5x−3y=12
y=3x−8
d.4x−7y=−4
3x+2xy=8
Answer by MathLover1(20850)   (Show Source):
You can put this solution on YOUR website!
a  system of equations is when we have two or more equations
a equations are algebraic equations, such as  for example, in which the variables are of the   (that is, raised only to the first power)
so, all other equations where the variables are of the higher degree are NOT equations, and such system is NOT system
you are given:
1.Which of the following are NOT linear systems. In each case explain why.
a.
as you can see,the variables are of the and this system is a linear system
b.
 =>the variables are of the 
 =>the variables are of the
and this system is a NOT linear system
c.
as you can see,the variables are of the and this system is a linear system
d.
 => which is a hyperbola
as you can see,the variables are of the ,but is not a linear equation, and this system is NOT a linear system
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