No
Imagine multiples to be 'times tables'. So the multiples of 9 are the 9 times table:
9, 18, 27, 36 and so on.
3 would be a factor of 9. Factors are numbers that can divide exactly into another number.
I hope I helped!
Answer:
See below
Step-by-step explanation:

They Are Parallel , Two intersecting lines Can Lie In more than one plane
A linear function does indeed form a line.
First, let's divide by 4, since 4 can go into both the numerator and denominator.
56/4 = 14
100/4 = 25
That gives us 14/25.
That fraction can't be reduced further, so the simplest form of 56/100 is 14/25.
Hope that helped!