That's not really a question needed to be asked
Midnight zone i hope this helps
Make a ratio, then cross multiply.
4/30=x/48
30x=4x48
30x=192
x=6.4
No
It is not proportional, because when x = 0, y does not equal 0.
when x = 0, y = -4. Therefore, it doesnt pass through the origin.
