System of Equations
By Tessa Cisco
What Is A System Of Equations?
Three Types of Systems of Equations
If the two lines are graphed and they intersect at one point, then the answer is one solution. The solution is the intersection point.
In a no solution problem the lines are parallel and will never intersect so the problem has no solution.
In an infinitely many problem the two lines lie on top of each other, that means that there is an infinite number of solutions.
2. I used elimination to solve the system of equations an then, I simplified until I got the answer to x.
3. I plugged x back into the first equation to find what y is equal to.
4. My solution was (5,3), but the question asks for how many hardcover books she purchased. The answer is 5 because x represented hardcover books.