Mathematics
Grade-8
Easy
Question
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. Calculate the average rate of change.
- 200
- 150
- 300
- 75
Hint:
To find the average rate of change, divide the change in y-values by the change in x-values.
The correct answer is: 75
To find the average rate of change, divide the change in y-values by the change in x-values.
After 2 hours he is at an altitude of 400 feet = (x1, y1) = (2,400)
After 6 hours, he is at an altitude of 700 feet. = (x2, y2) = (6, 700)
Related Questions to study
Mathematics
Find which of the following are ways to find the rate of change.
Find which of the following are ways to find the rate of change.
MathematicsGrade-8
Mathematics
If a carpenter earned $1000, what is the best estimate for how many days he worked?
If a carpenter earned $1000, what is the best estimate for how many days he worked?
MathematicsGrade-8
Mathematics
Which of the following would be a reasonable approximation for the length of time it would take this person to run 6 miles?
Which of the following would be a reasonable approximation for the length of time it would take this person to run 6 miles?
MathematicsGrade-8
Mathematics
Write the equation for the line.
Write the equation for the line.
MathematicsGrade-8
Mathematics
As the age of the car increases, its value decreases. Determine the scatter plot that represents this relationship.
As the age of the car increases, its value decreases. Determine the scatter plot that represents this relationship.
MathematicsGrade-8
Mathematics
If the slope is - 
, what does that mean?
Use the given line of best fit to approximate the rate of change relative to the scatter plot above.
If the slope is - , what does that mean?
Use the given line of best fit to approximate the rate of change relative to the scatter plot above.
MathematicsGrade-8
Mathematics
Find the number of trees that are 3 years old.
Find the number of trees that are 3 years old.
MathematicsGrade-8
Mathematics
Using the linear model, y = 10 x + 10 predict the temperature in Hayward in July ( x = 7).
Using the linear model, y = 10 x + 10 predict the temperature in Hayward in July ( x = 7).
MathematicsGrade-8
Mathematics
Determine the slope and y-intercept from the following equation: y = 
x + 3
Determine the slope and y-intercept from the following equation: y = x + 3
MathematicsGrade-8
Mathematics
Using the linear model, y=1500x+900 predict how much the elevator will weigh if there were 6 people on it.
Using the linear model, y=1500x+900 predict how much the elevator will weigh if there were 6 people on it.
MathematicsGrade-8
Mathematics
If the debate team plans to practice for 6 hours, how many debates should they win?
If the debate team plans to practice for 6 hours, how many debates should they win?
MathematicsGrade-8
Mathematics
Write the equation with a slope of 
and a y-intercept of -3.
Write the equation with a slope of and a y-intercept of -3.
MathematicsGrade-8
Mathematics
Calculate the age of the tree that is 8 feet tall.
Calculate the age of the tree that is 8 feet tall.
MathematicsGrade-8
Mathematics
Find the y-intercept in the following equation: y = - 4 x - 5
Find the y-intercept in the following equation: y = - 4 x - 5
MathematicsGrade-8
Mathematics
In the scatterplot shown below, a line has been drawn to show the trend in a population of box turtles over a period of twelve months.
Estimate the population of box turtles after 15 months.
In the scatterplot shown below, a line has been drawn to show the trend in a population of box turtles over a period of twelve months.
Estimate the population of box turtles after 15 months.
MathematicsGrade-8
