Question

Y = +2x+5; domain = {-2, 2, 4}
Plz help meee

Answer 1

We have to put values of domain to find range

`\\ \ast\sf\longmapsto y=2x+5`

`\\ \ast\sf\longmapsto D_R=[-2,2,4]`

`\\ \ast\sf\longmapsto y=2(-2)+5=-4+5=1`

`\\ \ast\sf\longmapsto y=2(2)+5=4+5=9`

`\\ \ast\sf\longmapsto y=2(4)+5=8+5=13`

Now

`\\ \ast\sf\longmapsto R_R=[1,9,14]`