Given the system
-x-3y – 4z=2
-x+2y-4z = 0, which is true?
2x-y+ 5z = 1

a)The system has no solutions.
b)The system has exactly one solution.
c)The system has exactly three solutions.
d)The system has an infinite number of solutions.

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

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation:

need more information

step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!