Question

Match a system of equations to each description.

System with one solution: (-1, 3)
System with no solutions
System with infinite number of solutions
2x + 2y = -8 and 3x + 3y = - 12
- 3x + 3y = 12 and 5x + 5y = 10
y +4 =-x and y = -x + 2

Answer 1

Image result for System with one solution 1 3 System with no solutions System with infinite number of solutions 2x 2y 8 and 3x 3y 12 3x 3y 12 and 5x 5y 10 y 4 x and y x 2

You can tell that an equation has infinitely many solutions if you try to solve the equation and get a variable or a number equal to itself.

Explanation:

Answer 2

1) 2x + 2y = -8 and 3x + 3y = - 12: Infinite: the lines are the same.

2) - 3x + 3y = 12 and 5x + 5y = 10: One solution (-3.10)

3) y +4 =-x and y = -x + 2: No solutions. Parallel

Explanation:

See the attached worksheet. All three explanations are used to identify the three systems of equations. Some of the equations are equal to each other, apparent only when one rearranges the equations.