Finding the Variable

5x - 4y = 11

5x + 4y = -14

which variable will be eliminated?

• x

• y

• none!!!!!!!

• both

Solve using Substitution (instead of elimination)

• (3,8)

• (8,3)

• (0,2)

• (2,0)

Solve using Elimination Method:

x - y = 11

2x + y = 19

• (10,-1)

• (-1,10)

• (3,-4)

• (6,7)

Solve using Elimination Method:

4x + 9y = 28

-4x - y = -28

• (-7,0)

• (6,0)

• (-6,0)

• (7,0)

• (6,7)

• x

• y

• both

• neither

What would be the first step in finding the solution with elimination?

• cross out the 3y and -3y

• cross out the 4x and x

• change all the signs of the second equation

• add 1 and -11

Kess wants to know the effect of studying an extra 10 minutes each day has on her Math grade. In this scenario, her time studying is the...

• Independent Variable

• Dependent Variable

What value of 𝑥 would make 𝑦 = 1 in the equation 3𝑥 + 𝑦 = 4?

• -1

• 0

• 1

• 2

If written in standard form, what is the value of 𝐵 in the equation 4𝑦 -5 = 𝑥?

• -5

• -4

• 0

• 1

What is the definition of a variable?

• The letter used to represent a quantity

• The little number or letter used to raise to a power

• The number in front of a variable

• The number with no variable