Question

# Alexa is training for a 10K race. For each of her training runs, she recorded the distance she ran and the time she ran. She made a scatter plot of her data and drew a trend line. Use the trend line to predict how long it would take Alexa to run 4.5 miles.

- 40 minutes
- 45 minutes
- 35 minutes
- 42 minutes

## The correct answer is: 45 minutes

### For a distance of 4.5 miles, the trend line shows a time of 45 minutes. So, it will take Alexa about 45 minutes to run 4.5 miles.

For 1 mile alexa took 7.5 minute

for 2 miles she took 15 minutes

Similarily the trend of graph is clearly depicting the time taken for alexa to cover a distance of 4.5 mile is 45 minutes .

### Related Questions to study

### The slope is undefined means

Correct option is (a)

When there is increase in dependent variable without any change in independent variable the graph shows a vertical line which means the slope of the line is undefined

### The slope is undefined means

Correct option is (a)

When there is increase in dependent variable without any change in independent variable the graph shows a vertical line which means the slope of the line is undefined

### The slope is zero means

Correct option is (a).

when slop of any equation is zero it means there is no change in dependent variable with change in independent variable hence the graph becomes a horizontal line

### The slope is zero means

Correct option is (a).

when slop of any equation is zero it means there is no change in dependent variable with change in independent variable hence the graph becomes a horizontal line

### Which association has slope -1?

### Which association has slope -1?

### Which association has slope 1?

### Which association has slope 1?

### Which figure gives perfect linear correlation?

### Which figure gives perfect linear correlation?

### When the value of the independent variable increases and the value of the dependent variable

Increases such type of correlation is

### When the value of the independent variable increases and the value of the dependent variable

Increases such type of correlation is

### When the value of the independent variable increases and the value of the dependent variable

decreases such type of correlation is

The correct option is (a).

Reason : Whenever there is decrease in dependent variable with increase in independent the graph is downward with negative slope

### When the value of the independent variable increases and the value of the dependent variable

decreases such type of correlation is

The correct option is (a).

Reason : Whenever there is decrease in dependent variable with increase in independent the graph is downward with negative slope

### The scatter plot shows David’s height at various ages. Choose the right answer that describe the type of association between David’s age and his height.

The corerect option is (c)

Reason :

As the height of David increases with increase in his age , the graph is going upward as both the variable are increasing so it is a case of positive association and since there is almost constant change in both the variable it is shows linear relationship also

### The scatter plot shows David’s height at various ages. Choose the right answer that describe the type of association between David’s age and his height.

The corerect option is (c)

Reason :

As the height of David increases with increase in his age , the graph is going upward as both the variable are increasing so it is a case of positive association and since there is almost constant change in both the variable it is shows linear relationship also