12.

13.

16.

is already in simplest form.
Answer:
4/5 is greater than 3/8, so this sign: >
Hello do 9+46=684 there you go to find sum 69
Answer:
y=2x+1
Step-by-step explanation:
Parallel = gradients are the same
Example: y=2/4x+5
Perpendicular = gradients are the inverse of each other
Example: y= -4/2x+1
Any equation would be correct unless the gradient is 2/4 or -4/2