Answer:
X is less than or equal to -3
Hope that answers your question
If a line is parallel to another line,Then the gradients are the same.So m=4 .Using general formula for str8 line, y=mx+c

sub in coorfinates (1,13)

So C=9.
N,R and T,U. Both are at 90 degree angles.
Answer:

Step-by-step explanation:
remaining cups = total cups - used caps
let remaining cups be = x
total cups = y = 8
used cups = z= 
Hence x = y-z
x = 8 - 
=
-
=
=
= 
x= 
Remaining cups = 