Real World Slopes

What is the meaning of rate of change in the context of the problem?

• The distance to New York City  increases by 55 miles per hour.

• New York City is 55 miles away at the start of the trip.

• The distance to New York City decreases by 55 miles per hour.

• It takes 55 minutes to get to New York City.

Find the slope of the line.

• Undefined

• 0

• 1/1

• -1/1

The two tables show Calvin and Elaina's earnings per hour. When do they both earn the same amount?

• After 10 hours of work they both earn $250.

• Elaina always earns more.

• Calvin always earns more.

• After 5 hours of work they both earn $125.

When is the graph increasing?

• 4am - 4pm

• 4am - 12pm

• 12pm - 4pm

• 4pm - 8pm

When is the graph decreasing?

• 4pm - 8pm

• 4pm - 8am

• 12pm - 4pm

• 8am - 12pm

How long was Justin's trip?

• 70 min

• 50 min

• 12 min

• 60 min

When is the graph increasing?

• 0-10

• 10-40

• 40-60

When is the graph decreasing?

• 40 - 60

• 0-10

• 10-40

The LNHS Lions stadium seats about 2,000 people. The tickets sell for $6 each. The function f(x) = 6x represents the situation where x is the number of people in attendance and f(x) is the amount of money LNHS makes as revenue. What is the range of the situation?

• 0 < f(x) < 6

• 0 < f(x) < 2,000

• 0 < f(x) < 12,000

• 2,000 < f(x) < 12,000

Pedro is driving to Nevada. The distance d in miles he has left to travel, based on the hours driving h, can be modeled by the function:

d(h) = 2100 - 70h

How can you determine how long the trip will take?

• Set the distance = 0 and solve for h; the answer is 30 hours.

• Set the hours = 0 and solve for d; the answer is 70 hours.

• You can't figure it out since the function has lots of combinations of hours and miles.