Unit 4 - Solving Systems of Equations - Check 2

A ________________ is a set of two or more equations that have the same variables.

• solution of a system

• elimination method

• system of equations

• table

Solve using Elimination.

4x + 8y = 20

-4x + 2y = -30

• (-7,1)

• (2,-5)

• (-2,5)

• (7,-1)

Solve by elimination

2x + 9y = -7

6x - 3y = 9

• (-1, -1)

• (2,-1)

• (1,1)

• (1,-1)

If two lines are parallel, how many solutions do they have?

• 1

• 2

• infinite

• none

Which ordered pair is the solution of the system graphed below?

• (2, 0)

• (8, 0)

• (-3, 5)

• (3, 8)

What is the type of solution to the system of equations?

y = 1/4x - 3

y = 2/8x - 3

• one solution

• no solution

• infinitely many solutions

What is the type of solution to the system of equations?

y = -2x - 7

y = -2x + 8

• one solution

• no solution

• infinitely many solutions

The graph of a system of linear equations is shown below. What is the solution of the system?

• no solution

• infinitely many solutions

• (-3, 0)

• (0, 6)

A linear system has infinitely many solutions when the graphs of the equations are _____________.

• not identical

• parallel

• identical

• one point

What is the type of solution to the system of equations?

y = -x -6

y = 2x + 6

• one solution

• no solution

• infinitely many solutions

• none of the above