Systems of Linear Equations Review

How can you tell if a point is a solution to a system?

• It makes the first equation true.
• The (x,y) coordinates satisfy both equations
• It makes logical sense
• It makes neither equation negative

What is the solution?

• (2, 2)
• (3, 2)
• (3, 4)
• (2, 3)

What is the solution?

• (1, -1)
• (-1, 1)
• (0, -2)
• (0, 1)

Which of the following describes the best method for solving this system of equations?

• Graphing, because both equations are in slope-intercept form.

• Elimination, because both equations are in standard form.

Solve the following system of equations using the substitution method:

• (1, -4)

• (1, 4)

• (-4, -7)

• (-7, -4)

Solve the following system of equations using the substitution method:

• (7, 0)

• (0, 7)

• (-5, -7)

• (5, 7)

• Graphing, because both equations are in slope-intercept form.

• Substitution, because x is isolated in the second equation. 

• Substitution, because y is isolated in the first equation. 

•  Elimination, because both equations are in standard form.

• (3,1)
• (1,3)
• (-3,1)
• (3,-1)

Which of the following describes the best method for solving this system of equations?

• Graphing, because both equations are in slope-intercept form.

• Substitution, because x is isolated in the second equation.

• Substitution, because y is isolated in the first equation.

• Elimination, because both equations are in standard form.