This article below presents detailed guidance on how to add graphs to slides in PowerPoint.
1. Create a Graph.
Step 1: Navigate to the Insert -> Chart:

Step 2: A dialog box will appear allowing you to select the type of chart you want to create -> click OK:

Step 3: After selecting the chart type, input the data you want to visualize:

- The graph result has been generated:

2. Modify the Chart.
2.1 Change font style, including text on the chart.
- If the text on the chart is too small, right-click on any text on the chart -> select Font:

- A dialog box will appear -> choose font, style, and font size as desired -> click OK:

- After selecting, proceed to edit and add content to the chart title:

Enhance your charts with additional elements.
Select the Chart Element icon to access a variety of components to add to your charts, such as data labels.

Customize the chart style effortlessly.
Choose from a range of chart styles to give your visuals a unique look.

Refine your chart data effortlessly.
To filter data on your chart based on specific criteria, simply click on Chart Filters and select the criteria you wish to filter from the list:

Additionally, to change the chart type, click on the chart, then navigate to Design -> Change Chart Type:

A dialog box for Change Chart Type will appear, where you can select the chart type you want to switch to. Click OK to confirm your selection:

Here are the results after changing the chart type:

Above is a detailed guide on how to add charts in PowerPoint.
Wishing you all success!
