how can i zoom in without a mouse?

how can i zoom in from my pc without a mouse?plz answer quick!?

Ok so you need a MOUSE but if your on a laptop an have no scrollwheel this is how:

Click and hold the “Alt” button.

Right-Click and drag with your mouse/touchpad.

Thats it! Hope I helped!

Hold a magnifying glass over the screen

Right-Click and try pressing W A S D