Equation Modeling

Which equation is modeled?

• x + 3 = 9

• x - 3 = 9

• 3x = 9

• 3x - 3 = 9

Which equation matches the image? THE CUP IS THE VARIABLE & THE CIRCLES EQUAL ONE EACH.

• n + 2 = 6

• 2n = 6

• 2n = 5

• n + 2 = 5

Solve for the missing variable:

• y = 7

• y = 6

• y = 1/6

• y = 8

Which equations matches the picture?

• 3B + 1 = 6

• B + 3 = 6

• 1 + 3 = 6

• 6 = 3B + 1

Which equation matches the picture above?

• c = 4

• 1 + 1 = 8

• 2 = 8

• 2C = 8

Which equation matches the picture above? ( circles = 1 and triangles = t)

• t = 3

• t + 4 = 7

• 1 + 4 = 7

• 4t + 1 = 7

Which equation matches this model?

• 7x + 3 = 23

• 2x + 4= 10

• 3x  - 8 = 3

• 4x + 3 =9

Which of the following is a mathematical sentence that has an equal sign?

• Term

• Expression

• Coefficient

• Equation

Name the variable in the following number sentence:
2x -7 = 9

• x

• 2

• 7

• 2x-7

Name the coefficient in the following number sentence:
9x - 15 = 27

• 9

• 15

• x

• 9x-15