Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means hang so the verb vocab version is to hang. This is when you hang something, like a picture. You can remember this because you don't really care (ける) about where you hang it, as long as you're the one to do it.
The reading is the same as what you learned with the kanji.
Since his death, I don’t know where I should hang the picture he gave me.