# charting quiz answers Measure the acceleration on the @boardname@ in the "x" direction. ## Name ## Directions Use this activity document to guide your work in the [charting activity](/lessons/charting) Answer the questions while completing the tutorial. Pay attention to the dialogues! ## 1. Why are you creating a 'forever' loop? <br/> We are creating a forever loop to constantly display the appropriate brightness on the LED display. ## 2. Write the line of code to measure the acceleration with respect to the "x" axis and display this value in a bar graph. <br/> ```blocks led.plotBarGraph(input.acceleration(Dimension.X), 0) ``` ## 3. After vigarously moving the @boardname@ from side to side along the "x" axis for a sufficient amount of time,insert the Excel graph for displaying a line chart used to display trends over time. <br/> ![](/static/mb/line_chart.png)