Writing Equations in 2 Variables

Charlie is starting a savings account. He has saved $40 and he earns $7.50 per hour. Write an equation for the amount Charlie saves.

• $40+7.50x=y$

• $40x+7.50=y$
  

• $40+7.50=y$
  

• $40+17.50x=y$
  

Tags

CCSS.6.EE.C.9

Mr. Piper's plumbing needed repairs. The plumber charged $98 for parts plus $45 per hour for labor. Write an equation to find the total cost of repairs.

• $98x+45=y$
  

• $98+45x=y$

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The 30 members of a choir are trying to raise money to cover travel costs to a singing camp. They have already raised $600. Which equation would you solve to find the average amount each member can raise in order to meet the goal?

• $30x+600=y$

• $30x-600=y$
  

• $x+600=30y$
  

• $30x=600y$
  

Tags

CCSS.HSA.CED.A.3

The space club is having some posters printed. The printer charges $250 plus $2 per poster. Write an equation for the cost of the posters.

• $250x+2=y$

• $y+2x=250$

• $250-2x=y$

• $2x+250=y$
  

Tags

CCSS.6.EE.C.9

Maggie buys a Chromebook for $200. It decreases in value each month by $20. Write an equation for the total value of the Chromebook.

• 
  

   $20x+200=y$  
  

•  $20x-200=y$  

•  $200+20x=y$  

•  $200-20x=y$  

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A cheese pizza costs $5. Additional toppings cost $1.50 each. Write an equation in two variables that represents the total cost of a pizza.

• $y=5x+1.50$

• $y=5+1.50x$

• $1.5x+5y=8$

• $x+1.5y=5$

Tags

CCSS.6.EE.C.9

It costs $35 to join an art studio. The pottery class fee is $5. Write an equation in two variables that represents the total cost of the art studio.

• 
  

  $35x+5=y$
  

• $5x+35=y$

Tags

CCSS.6.EE.C.9

Picture frames from a frame website cost $50 each and $10 for shipping. Write an equation for the total cost of buying picture frames from this website.

• $50x+10=y$

• $10x+50=y$

Tags

CCSS.6.EE.C.9

Which equation matches the table?

• y = x 
• y = 5x
• y = x - 4
• y = x + 4

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Which equation matches the table?

• y = 3x + 9
• y = x + 9 
• y = x + 3
• y = 12x - 3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2