Create in Google Drawing and Insert into Google Slides
If you have created an infographic or other image in Google Drawing, you can insert it into your Google Slides presentation. I should note that the drawing engine in Google Drawing is the same as Google Slides so you may just want to make it in Google Slides to begin with. You can also use Control A to select all, Control C to copy and then Control V paste it into Google Slides.
Publish to the Web
Copy the Link
Insert in Google Slides