Algebra 2 Section 1

To rewrite an expression into an equation, and to replace the variable is called:

• quadratic equation

• elimination

• system

• substitution

To remove all numbers from one side of an equation so the variable can be alone on one side:

• eliminate the variable

• remove the variable

• cancel the variable

• isolate the variable

To add or subtract the opposite of a number to both sides of an equation in to add its:

• elimination

• substitution

• regulation

• inverse

The most common letters for solving a system of three variables are:

• abc

• xyz

• klm

• opq

Solve the system: 3x+7y=5

-5x+ 2y=-1

• x=17

  y=15

• x=41

  y=20

• x=17/41

  y=22/41

• 41/22

  7/22

Which of the following equations match the given graph?

• y  < 2/5x + 1
• y ≥ -2/5x + 1
• y ≤  2/5x + 1
• y ≥ -2/5x - 1

Which point below is NOT part of the solution set?

• (0, 0)
• (-10, -10)
• (-1, 5)
• (5, 20)

Are the points on the line part of the solution set or not? For example

• Yes, they are part of the solution set
• No, they are NOT part of the solution set

Which of the following equations match the given graph?

• x ≥ -1
• x ≤ -1
• x > -1
• x < -1