Algebra Review

What is the error?

• They needed to make the 12 a negative

• They did not add -4x+7x correctly

• They divided wrong

• No error

Tags

CCSS.HSA.REI.A.1

What is the error?

• They should not have added 3x

• They added 5+19 wrong

• They divided 2/24 wrong

• No error

Tags

CCSS.HSA.REI.A.1

A student tried to solve the following equation but made a mistake. Choose the step in which the mistake first appears.

Step 1: 9 - 5(2x + 1) = -28

Step 2: 4(2x + 1) = -28

Step 3: 8x + 4 = -28

Step 4: 8x = -32

Step 5: x = -4

• Step 2

• Step 3

• Step 4

• Step 5

Tags

CCSS.HSA.REI.A.1

In which step was the error made.

6(x + 2) - 7 = 5(x - 3)

Step 1: 6x + 12 - 7 = 5x - 15

Step 2: 6x + 5 = 5x - 15

Step 3: x + 5 = -15

Step 4: x = -10

• Step 1

• Step 2

• Step 3

• Step 4

a = b + c   , for  c

• c = a - b

• c = a + b

• c = ab

• c = a / b

Tags

CCSS.HSA.REI.B.3

Solve the equation for w.  
^{x = w / a}

• w = a / x

• w = x / a

• w = ax

• x = wa

Tags

CCSS.HSA.CED.A.4

Solve for n:
2m - n = 8

• n = 2m - 8

• n = -2m - 8

• n = 2m + 8

• n = -2m + 8

Tags

CCSS.6.EE.C.9

Solve for x:

• x = yb - v

• x = by - v

• x = by + v

Tags

CCSS.HSA.CED.A.4

What is f(6) for the function f(x)=3x-8

• -8

• 10

• -144

• answer not here

Tags

CCSS.HSF.IF.A.2

• 2x

• -3

• 3

• 10

Tags

CCSS.HSF.IF.A.2