Write Equations of Lines Word Problems (ID given)

Identify the given information.

Diane knows a phone call to a friend initially costs 25 cents for the first 3 minutes. After that, 10 cents is added to the cost for each additional minute. The number of minutes you call and the cost are related.

• slope and y-intercept

• slope and a point

• two points

Identify the independent variable (x).

Diane knows a phone call to a friend initially costs 25 cents for the first 3 minutes. After that, 10 cents is added to the cost for each additional minute. The number of minutes you call and the cost are related.

• cents

• minutes

• number of phone calls

Identify the given information.

Tickets to a concert cost $8 each plus an order-processing fee of $4.

• slope and y-intercept

• slope and a point

• two points

Identify the independent variable (x).

Tickets to a concert cost $8 each plus an order-processing fee of $4.

• number of tickets

• cost

• order processing fee

Identify the given information.

A magazine offers an online subscription that allows you to view archived articles.

You are charged for the initial magazine subscription as well as a fee per article viewed.

To view 30 archived articles, you pay $49.15. To view 33 archived articles, you pay $57.40.

• slope and y-intercept

• slope and a point

• two points

Identify the independent variable (x).

A magazine offers an online subscription that allows you to view archived articles.

You are charged for the initial magazine subscription as well as a fee per article viewed.

To view 30 archived articles, you pay $49.15. To view 33 archived articles, you pay $57.40.

• number of magazine subscriptions

• number of viewed articles

• cost

Identify the given information.

Mrs. McElwee's classroom was 58 degrees at 7:00 am! She immediately turns up the thermostat. By noon, the temperature was up to 71 degrees. The temperature rose at a constant rate while the heater was running.

• slope and y-intercept

• slope and a point

• two points

Identify the independent variable (x).

Mrs. McElwee's classroom was 58 degrees at 7:00 am! She immediately turns up the thermostat. By noon, the temperature was up to 71 degrees. The temperature rose at a constant rate while the heater was running.

• temperature

• time

• rate of temperature change

Identify the given information.

The current water level of an indoor swimming pool is 6 feet. The rate of evaporation is 1/3 inch per day.

• slope and y-intercept

• slope and a point

• two points

Identify the independent variable (x).

The current water level of an indoor swimming pool is 6 feet. The rate of evaporation is 1/3 inch per day.

• water level (feet)

• days

• rate of evaporation