Equations in Two Variables

Which equation matches the table?

• y = x + 5

• y = 5x

• y = x - 5

• x = y - 5

Look at the table below. Write an equation to match the pattern between m, minutes and bubbles blown, b.

• b = 12(m)

• b= m +12

• b = m ÷ 12

• none of these

If y=7,find the value of 2(y+4)

• 11

• 22

• 20

The sum of two numbers is -2.  The difference is -​ 12.  
Find the 2 numbers

​ ​ (a)   ​ (b)   ​

• 5

• -7

• 6

• -4

• 3

• -3

• 2

• -2

?

Mathematical Equivalence

OFF

What equation matches this situation?
Robyn had some video games then bought 4 more.  Now she has a total of 10 games.

• v - 4 = 10

• v + 4 = 10

• 10 - 4 = v

• Answer not Given

What is the algebraic equation for this table?

• y = 480x

• x = y/480

• x + 480 = y

• 480 - x = y

Nancy can type 50 words per minute. Look at the table below to write an equation that matches the data.

• m=50 + w

• w= 50m

• w= 50 + m

• m= 50 - w

Write the equation of the line.

• y = x + 1

• y= x - 1

• y= -x + 1

• y= -x - 1

The area of a rectangular deck is 125 square feet. The width of the deck is 25 feet. Write an equation and solve to find the length. {Hint A = L x W}

• 25x=125,

  x = 5 feet

• x+22=125,

  x = 20 feet

• x-25=125

  x=150 feet

• 25x=125

  x=3,125 feet