Algebra Chapter 2A test - Part 1 (2 pts each, 30 pts total)

When solving the following equation, what should you do first?

-(2x + 4) = 4(x - 4)

• add 2x + 4

• subtract 2x on both sides

• distribute -1 on the left and 4 on the right

• combine like terms

What is the next step you should take?

-4x = 4

• add 4 to both sides

• subtract 4 from both sides

• divide both sides by 4

• divide both sides by -4

What is the first step?

 $2x+5=-7x-3$ 

• Subtract the  $7x$  from both sides.

• Add the $7x$ to both sides.

• add 5 on both sides

• add $2x$  on both sides

Find the error in the problem below
19 - 2k = 3k - 1
      -2k    -2k
    19 = 1k - 1
     +1        +1
        k = 20

• They should combine 19 - 2k to get 17k

• They should subtract 1 on both sides instead of adding 1

• I can not find an error

• Instead of subtracting 2k on both sides they should have added 2k

What is the solution to this equation?

• one solution
• no solution
• infinite solutions
• none of these

Tags

CCSS.8.EE.C.7A

What should be done first to solve?

2x - 7x + 1 = 2x - 1

• combine like terms 2x & -7x

• add 2x to both sides

• combine like terms -7x & +1

What would the next line look like if you solved this equation?

14 - 2 ( 3p + 1) = 6 ( 4 + p)

• 14 - 6p + 1 = 24 + 6p

• 14 - 6p - 2 = 24 + 6p

• 14 - 6p - 2 = 24 + p

If you solve an equation and the variables cross out and you get the same number on both sides of the equal sign, what would be the solution?

• No Solution

• One Solution

• Infinite Solutions

What kind of solution does the equation have?

• one solution

• no solution

• infinite solutions

• none of these

Which equation has infinite solutions?

• $4x-7=2x+10$

• $-5x+3=3-5x$

• $10x+4=4-10x$

• $3x-7=3x+12$