Linear Functions Unit Review

• Taylor can write 6 words per minute
• Taylor can write 25 words per minute
• Taylor can write 50 words per minute
• Taylor can write 150 words per minute

A climber is on a hike. After 2 hours he is at an altitude of 400 feet. After 6 hours, he is at an altitude of 700 feet. What is the average rate of change? 

• 200
• 150
• 300
• 75

Given the equation y = 2x + 5 , where x is the number of homework questions and y is the number of minutes it takes to do all the homework, what does the y-intercept of the line mean in real world context.

• For every homework assignment, it takes 5 more minutes to complete.
• For every homework assignment, it takes 2 more minutes to complete.
• It initially takes 5 minutes to get homework out and start working.
• It initially takes 2 minutes to get homework out and start working.

Which company shows a greater rate of change?

• Water's Edge Rafts
• Ryan's Rafts

Who drove faster?
Dan drives 60 miles in 5 hours.
David drives 75 miles in 6 hours.

• Dan
• David

John is trying to save money this year. When he opened his account he had a balance of $300. By the end of the 12 month time span, John had $1500 in his savings account.  Find the rate of change.  Write an equation in slope-intercept form to model this situation.

• y = 100x - 300
• y = 100x + 300
• y = 1/10x + 300
• y = 1/10x - 300

Johnny has to pay $15 for a large pizza and 1.50 for each topping.  What is the meaning of the y-intercept?

• It cost 1.50 per topping
• It cost 1.50 for unlimited toppings
• It cost $15 for a large pizza
• It cost $15 for a large pizza with no toppings

Which line has the greatest average rate of change on the graph? Why?

• Blue, it's average rate of change is $120 per month
• Red, it's average rate of change is $40 per month
• Blue, it's average rate of change is $160 per month
• Red, it's average rate of change is $80 per month

• Function
• Not a Function

• Function
• Not a Function