Question

Hello! Please Help Its just one simple Question ^^

Alright, I can do it on my own but it'll take extra time and I wanna catch up real quick and this alone will take me like 10 minutes and I want to save time.

Answer 1

`\\ \sf\longmapsto f(x)=112-kx`

• f(-3)=121

Put -3 in f(x)

`\\ \sf\longmapsto f(-3)=121`

`\\ \sf\longmapsto 112-k(-3)=121`

`\\ \sf\longmapsto 112+3k=121`

`\\ \sf\longmapsto 3k=9`

`\\ \sf\longmapsto k=3`