Question 34·Easy·Two-Variable Data: Models and Scatterplots
A scatterplot shows the relationship between the number of minutes a rechargeable flashlight was used, , and the percentage of battery remaining, , for several tests.
Which choice gives the coordinates of a point that appears on the scatterplot?
For scatterplot questions that ask about a specific plotted point, treat the graph as a list of exact ordered pairs. Locate the relevant -value on the horizontal axis, read the corresponding -value from the dot, and then choose the option that matches both coordinates exactly.
Hints
Think in ordered pairs
Each dot represents an ordered pair , where is the horizontal value and is the vertical value.
Check both coordinates
For an option to be correct, the scatterplot must have a dot at that exact -value and that exact -value.
Use the axes carefully
First find the -value on the horizontal axis, then read up or down to the dot and across to the -value.
Desmos Guide
Create a table of points
In Desmos, click + → Table. Enter the coordinates of the dots from the scatterplot as pairs.
Identify which option is included
Compare the answer choices to the table entries. The point that appears in the table (and on the scatterplot) is .
Step-by-step Explanation
Read a plotted ordered pair
Locate the dot above (minutes used) and read its height on the -axis (battery remaining).
Match to an answer choice
The dot at is at , so the plotted point is .