Lesson 12 Which Variable to Solve for Part 1

Lesson 12 Which Variable to Solve for Part 1

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Multiple Choice

Here is a linear equation in two variables: 2x+4y−31=123.

Solve the equation for x.

• x=77-2y

• x=-77+2y

• x=77+2y

• x=77-8y

Multiple Choice

Here is a linear equation in two variables: 2x+4y−31=123.

Solve the equation for y.

• y=77-2x

• $y=\frac{77-x}{2}$

• $y=\frac{77+x}{2}$

• y=77-8x

Open Ended

Fill in the Blanks

Fill in the Blanks

Fill in the Blanks

Fill in the Blanks

Multiple Select

Bananas cost $0.50 each, and apples cost $1.00 each. Select all the combinations of bananas and apples that Elena could buy for exactly $3.50.

• 2 bananas and 2 apples

• 3 bananas and 2 apples

• 1 banana and 2 apples

• 1 banana and 3 apples

• 5 bananas and 2 apples

Open Ended

Elena says that equations A and B are not equivalent.

Equation A: 13−5x=48 Equation B: 5x=35

Write a convincing explanation as to why this is true.

Multiple Select

Select all the equations that are equivalent to the equation 3x−4=5.

• 3x=9

• 3x−4+4=5+4

• x−4=2

• x=9

• -4=5−3x