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

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