Scatter Plots Homework

Select all of the graphs that show a nonlinear association.

Which scatter plot is best modeled by a horizontal trend line?

The elevations, x, in meters (m) of 15 cities in the United States and their average annual temperature, y, in degrees Celsius (°C), are shown in the scatter plot.

The data are fit to a linear model. The equation of the model is $$y=-\frac{1}{150}x+23$$  

Enter a value in each box to complete the statements.

The slope of the model means that when the elevation increases by (a)   m, the average annual temperature decreases by 1 ºC.

The elevations, x, in meters (m) of 15 cities in the United States and their average annual temperature, y, in degrees Celsius (°C), are shown in the scatter plot.

The data are fit to a linear model. The equation of the model is $$y=-\frac{1}{150}x+23$$  

Enter a value in each box to complete the statements.

The slope of the model means that when the elevation increases by (a)   m, the average annual temperature decreases by 1 ºC.

A scatter plot is shown.

Which statement describes patterns shown in the scatter plot?

A toy car travels y meters after starting x meters from the bottom of a ramp. A diagram and table of data are shown.

The data are fit to a linear model. The equation of the linear model is  $$y=9.63x+0.22$$  .

Based on the equation, what is the starting position, in meters, needed for the car to travel 30 meters? Round your answer to the nearest tenth of a meter.

(a)  

Identify the correlation as positive, negative, or no correlation.

The numbers of cats in the barn and the number of mice in the barn.

Identify the correlation as positive, negative, or no correlation.

The age of the tree and the height of the tree.

Select all of the scatter plots that can be modeled by a linear trend line.

The manager of a new video game store records the total number of video games sold during the first 10 days that the store is open. The data are shown in the scatter plot with a line of best fit.

The equation for the line of best fit is $$y=343.95x+1.27$$  

Based on the model, what is the total number of games that the store will have sold after being open 20 days?

(a)