Question 31·Easy·Two-Variable Data: Models and Scatterplots
A community garden volunteer recorded the number of seedlings planted on each Saturday of a spring planting event. The scatterplot shows the number of seedlings planted for each Saturday.
Which choice is the number of seedlings planted on the 7th Saturday?
For scatterplot read-off questions, do not estimate a trend line. Instead, locate the specified -value, find the exact plotted point above it, and read its -value carefully using the axis scale.
Hints
Start at 7 on the x-axis
Find 7 on the horizontal axis (Saturday number).
Look for the plotted point above it
Go straight up from until you reach the point.
Read the height
Use the y-axis scale to read the number of seedlings for that point.
Desmos Guide
Enter the data in a table
In Desmos, add a table and enter the scatterplot points as ordered pairs .
Find the row with
Look for the table row where the -value is 7.
Read the corresponding y-value
Read the -value in that same row; that value is the number of seedlings planted on the 7th Saturday.
Step-by-step Explanation
Locate the 7th Saturday
On the scatterplot, find (the 7th Saturday) on the horizontal axis.
Read the number of seedlings
Read the -value of the plotted point above . It is , so the correct choice is 32.