Check Solutions of Equations

• (0,0)
• (-10,-9)

Tags

CCSS.8.EE.C.8B

• (5,8)
• (5,-1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (3,1)
• (-1,3)

Tags

CCSS.8.EE.C.8A

• (1,-4)
• (3,-1)
• (1,4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

How do you check the solution for the equation x + 8 = 3 if the solution is x = -5?

• Substitute -5 for x and verify that -5 + 8 = 3

• Substitute -5 for x and verify that -5 + 8 = 11

• Substitute 3 for x and verify that 3 + 8 = 3

• Substitute 3 for x and verify that 3 + 8 = 11

Answer explanation

The correct choice is to substitute -5 for x and verify that -5 + 8 = 3

Tags

CCSS.6.EE.B.5

How can we check to see if our answer is a correct solution to an equation?

• Cross your fingers and hope it's right.

• There's no way.

• Plug your answers into the original equation to see if it holds true.

Tags

CCSS.6.EE.B.5

How do you prove that your solution is correct? What is your success criteria for solving equations?

• I don't need to check: it's probably right!

• Substitution: plug the solution in for x and verify that the number sentence is true.

Tags

CCSS.7.EE.B.4A

To check your solution. You do what first?

• Isolate the variable

• Opposite

• Substitute the variable with the answer

• Use the "Golden Rule"

Tags

CCSS.6.EE.B.5

• True

• False

Tags

CCSS.6.EE.B.5

The solution to the equation a - 10 = -4 is 6. To check to see if your solution works you _________________the variable with the solution that you found and then verify that the left side is equal to the right.

• multiply

• replace

• subtract

• add

Tags

CCSS.6.EE.B.5