Linear Relationships

The number of inches of rain, y, after x minutes of rainfall during a storm can be modeled by the equation shown.

y = 0.004x

How many inches of rain falls in 2 minutes? (no unit, just number)

A cable company charges $70 per month for cable service to existing customers but for new customers, there is an additional one-time $100 service fee. What equation matches this situation?

• $y=70x$

• $y=70x+100$

• $y=70x+50$

• $y=70x+25$

• F

• G

• H

• J

• A

• B

• C

• D

is the relationship shown in the image linear?

• Yes

• No

• maybe, need more data

• sometimes

Write the equation of the line.

• y = -1/3x - 2
• y = 1/3x - 2
• y = 3x - 2
• y = -3x - 2

Find the slope of the line.

• -5/4
• 5/4
• -4/5
• 4/5

What is the y-intercept?

• 1/2
• 2
• 7
• 3

Describe this graph:

• Linear Function

• Non-Linear Function

• Not a Function at ALL

What is the equation for the

following situation:

Safari Golf charges $15 per hour plus $3 rental fee for the golf club.

• y = 3x + 15

• y = 15x + 3

• y = 15/3x

• y = 3/15x + 1