Equations & Systems Review

If two lines are parallel, the number of solutions is...

• one

• infinite solutions

• no solutions

• all of the above

This system has _____ solutions

• 1

• 2

• Infinitely many

• no

This system has _____ solutions

(Hint: Both lines are graphed over each other)

• 1

• 2

• Infinitely Many

• no

What is the solution to the system?

• (3, -1)
• (2, -6)
• No Solution 
• (6, -2)

What is the best method to use?

2x − 3y = −1

y =x − 1

• Graphing

• Substitution because a variable is defined

• Elimination because the equations are in standard form.

What is the proper way to set up the equation to begin solving the system?

y = 6x − 11

−2x − 3y = −7

• -2(-11) -3y= -7

• -2(6x-11) -3y = -7

• -2x -3(11) = -7

• -2x - 3(6x-11)= -7

Which of the following shows the equation below after it has been simplified?

• 34=10x+14

• 34=8x+18

• 34=9x+14

• 34=10x - 14

Which is the correct first step to solve the linear equation shown?

• Add 2.5 to both sides

• Divide -2.5 from both sides

• Add 15 to both sides

• Subtract 15 from both sides

Solve the equation:
-5x = 25

• x = 20
• x = -20
• x = -5
• x = 5

What is the first step to solve this equation:
11 - 3x = 44

• Add 3 to both sides
• Subtract 11 from both sides
• Add 11 to both sides
• Divide 3 on both sides.