Solving Equations Quiz 1

What is the difference between an expression and an equation?

• They are both solving for a variable

• An equation asks you to solve and an expression asks you to simplify.

• An equation has an equal sign and an expression does not.

• They're the same.

You are given x and y are equivalent to w (x + y = w).
How would you solve for x?

• take a 1/yth to both sides

• multiply y to both sides

• add y to both sides

• lose y from both sides

​In order to solve an equation, you need to do the ​ (a)  

• inverse
• stand on your head
• rewrite
• say the Pledge of Allegiance
• copy off of your neighbors paper

You are given x(y) = w.

What would y be equivalent to?

• y = w(1/x)

• y = w(x)

• y = w + x

• y = w - x

You are given 2x + 3 = y.
What would x be equivalent to?

• 2(y - 3)

• 1/2y

• 1/2(y - 3)

• y - 3

x - 2y = w is equivalent to x = ​ (a)   + ​ (b)  

• w
• 2y
• -w
• -2y
• 1/w
• 1/2y

Solve for w:
7x - 12 = 42

• x = 54(7) = 378

• x = 30(7) = 210

Groups:

(a) Correct

,

(b) Incorrect

• 8(3)(1/4)

• 6

• 24(1/4)

• 8(4)(1/3)

• 32(1/3)

Solve for m:
10 - 5m = 75

-5m = ​ (a)  

m = ​ (b)   = ​ (c)  

• 75 - 10
• 65(-1/5)
• -13
• 75 + 10
• 85(-1/5)
• -17
• 17
• 13

Solve for x:
-16 = 9 + 3x

• -16 + 9 = 3x

  -7 = 3x

  -7(3) = x

  x = -2 1/3

• -16 - 9 = 3x
  -25 = 3x

  -25(3) = x
  x = -8 1/3