Step 1: Open the slide:
Open the presentation in software such as MS PowerPoint or LibreOffice Impress.
Select the slide where the image has to appear.
Step 2: Use the Insert option:
Click the Insert tab on the ribbon.
Click Pictures (or Image) and choose 'This Device' to pick a file from the computer.
Step 3: Pick and place the image:
Browse to the folder and select the image file.
Click Insert (or Open). The image appears on the slide.
Step 4: Adjust the image:
Drag the corner handles to resize it.
Drag the picture to move it to the right place.
Save the presentation with Ctrl + S.
Final Answer:
Open slide, then Insert > Pictures > select the file > Insert, and finally resize and place the image.