Solving Systems Better Method

For which system is elimination the better choice?

• x + y = 5 and y = 3x - 2

• 5x + 3y = 18 and 2x - 3y = 4

• y = 2x + 1 and 3x - y = 7

• x - y = 2 and x + 2y = 8

Which is the best method for solving this system of equations?

• Substitution

• Elimination

• Graphing

Which is the best method for solving this system of equations?

8x + 4y = 12

y = -2x + 3

• Substitution

• Equal Values

• Elimination

Given a coordinate plane or graph paper, which is the best method for solving:

y = 2x + 1

y = 4x - 1

• Graphing: Use the slope-intercept form to graph

• Graphing: Use the cover-up method to graph

• Elimination

• Substitution

Which is the best method for solving this system of equations?

• Substitution

• Equal Values

• Elimination

If a system of linear equations has one solution, what does this mean about the two lines? 

• Parallel lines

• the same line 

• Intersecting lines

Solve the following system by substitution.

• (1,1)

• (1,2)

• (-1,-1)

• (1,-1)

Solve the following system by graphing.

• No Solutions

• (-4,2)

• (3,-4)

• (-2,-4)

Solve the following system by substitution.

• (2,3)

• (2,4)

• No Solution

• (-3,4)

Solve the following system by substitution.

• (-2,-1)

• (2,-1)

• (2,1)

• (-2,1)