range is how far up or down the garph can go
basically the limits of y
find min and max of y
basically find the biggestor smallest the x can get to influence y
confusing sorry
when x is an even number, that number is still negative
so make that number as small as possible
if x=(big number that is negative)
we get -1/(5^(big number)) which basically makes it nigligible or almost 0
y=-7 is max
when x=big number (positive) we get very negative number
so range is from negative infinity to -7
basically y<-7
we choose < and not ≤ because the -5ˣ will never dissapear, it will just be very, very small
y<-7 is answer
