Is this HW question even valid? (linear systems)

1. How can you tell if a word problem is linear or not?
2. How do you verify a linear system?
3. How many solutions does this linear system have y =- 6x 2 12x 2y =- 4?

How can you tell if a word problem is linear or not?

To clue you in, linear equation word problems usually involve some sort of rate of change, or steady increase (or decrease) based on a single variable. If you see the word rate, or even "per" or "each", it's a safe bet that a word problem is calling for a linear equation.

How do you verify a linear system?

Solution to a System of Linear Equations

To verify whether a point is a solution to a system or not, we will either determine whether it is the point of intersection of two lines on a graph or we will determine whether or not the point lies on both lines algebraically.

How many solutions does this linear system have y =- 6x 2 12x 2y =- 4?

y = -6x + 2 and -12x - 2y = -4, how many solutions does this linear system have? Summary: The linear system of equations y = -6x + 2 and -12x - 2y = -4 has infinitely many solutions.