N/4 < - 1 on a number line

-10x>-100 on a number line

5x>20 on a number line

N/4 < - 1 - we can multiply both sides with 4, so we dont have to deal with fractions.

N < - 4

So, our N goes left from - 4 on a number line.

-10x<-100 - divide both sides by 10

-x < - 10

x > 10

X is from 10 rightwards.

5x>20 - divide both sides by 5

x > 4

X is rightwards from 4.