7.1-7.4 Big Ideas Math

The first value in an ordered pair represents the independent value and is often referred to as x.

• True

• False

Determine whether the ordered pair (3,2) is a solution of y=2x-4.

• Yes

• No

Select the independent variable

• The amount of data used this month on my phone

• The cost this month of my cell phone bill

The equation b=500-30m gives the balance b (in dollars) that you owe on a drum set after m monthly payments. What is the balance after 10 monthly payments?

• $300

• $500

• $200

• $235

Select ALL of the ordered pairs that make this equation true. y=3x

• (2, 2)

• (6, 2)

• (4, 12)

• (2, 6)

Which equation matches the word sentence:   $A\ number\ x\ decreased\ by\ 3\ is\ 5$  

•  $x-3=5$  

•  $5-x=3$  

•  $x=5-3$  

•  $3=x-5$  

Which equation matches the word sentence:   $A\ number\ z\ divided\ by\ 7\ equals\ 14.$  

•  $7\div z=14$  

•  $z\div7=14$  

•  $14\div7=z$  

•  $14\div z=7$  

Solve the equation:

 $4+k=14$  

•  $k=11$  

•  $k=9$  

•  $k=10$  

•  $k=12$  

•  $k=8$  

Solve the equation: $3.5=m-2.2$  

•  $m=5.8$  

•  $m=2.2$  

•  $m=-1.7$  

•  $m=5.7$  

•  $m=1.3$  

Solve the equation: $8=\frac{4w}{3}$  

•  $w=6$  

•  $w=7$  

•  $w=8$  

•  $w=5$