Point-Slope, Slope-Intercept, Scatter Plots

a graph with points plotted to show a possible relationship between two sets of data

• Trend line

• scatter plot

• slope

• y intercept

a measure of the steepness of a line on a graph; the rise divided by the run

• Trend line

• Scatter plot

• Slope

• y intercept

the y-coordinate of the point where the graph of a line crosses the y-axis. (x is always 0 and y can be any number)

• Trend line

• Scatter plot

• Slope

• y intercept

The linear regression equation for the data is  y = 1.5x + 12.  Interpret the slope of the equation.

• The slope is (0, 1.5).  It means that a pizza with 0 toppings will cost $1.50.

• The slope is 1.5.  It means that it costs $1.50 per topping.

• There are 1.5 toppings.

• There are 1.5 pizzas.

What is the trend for this scatter plot

• Negative

• Positive

• None

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase. 

• As the temperature increases, the number of visitors increases. 

• As the visitors increase, the temperature decreases. 

• No correlation

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit?

• The more books students read, the lower their English grade.

• The more books students read, the higher their English grade.

• The fewer books students read, the higher their English grade. 

• No relationship exists between the number of books students read and their English grades. 

What relationship is shown in the scatter plot?

• As the cost goes down, the number sold goes down.

• As the cost goes up, the number sold goes down.

• As the cost goes down, the number sold remains the same.

• There is not relationship between cost and the number sold.

What is the y-intercept for the scatter plot shown?

• (0,0)

• (10,100)

• (60,500)

• (100,0)

For the graph shown, which two statements are a correct way to interpret the y-intercept?

• The calories started at 0.

• The initial time was 0 minutes.

• The initial calories were 0.

• The exercise log started with 0 minutes.