Can y’all like yk help me

Step-by-step explanation:

Slope=1

y= mx+b

y=1x +b

9=1(3)+b

b=9-3=6

y=1x+6

Y intercept=6

i dont know

step-by-step explanation:

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540