Analyze Two Variable Equations

• The solution is x=0

• The solution is the ordered pair (-5,-5)

• There is no solution since -5=-5 is a true statement.

• There are infinitely many solutions since -5=-5 is a true statement.

Tags

CCSS.MATH.CONTENT.8.EE.C.7.a

• Only Luis's steps are correct to solve the equation.

• Both sets of steps are correct to solve the equation.

• Neither set of steps is correct to solve the equation.

• Only Emma's steps are correct to solve the equation.

After how many hours would the amount Andrew and Dave pay for the rentals be equal?

Mathematical Equivalence

ON

Tags

CCSS.MATH.CONTENT.8.EE.C.8.b

• There is no solution.

• There are infinitely many solutions.

• There is exactly one solution at (5, -8)

• There is exactly one solution at (3, 1)

Tags

CCSS.MATH.CONTENT.8.EE.C.8.b

How many solutions will this system have? 

• No solution

• One Solution

• I Don't Know

• Infinitely Many Solutions

?

Mathematical Equivalence

OFF

Mathematical Equivalence

ON

• Luisa's conclusion is correct because 0=0 in Step 5 shows that the answer equals 0.

• Luisa's conclusion is correct because the x variable was canceled from both sides of the equation in step 4.

• Luisa's conclusion is incorrect because 0=0 in Step 5 indicates that there are infinitely many solutions.

• Luisa's conclusion is incorrect because 0=0 in Step 5 means that there are no real solutions.

3y + 4y + 6 = 20

y = ?

• y = 2

• y = -2

• y = 4

• y = 3

96 = 6(j + 8)

j = ?

• j = 12

• j = -4

• j = 9

• j = 8