A fraction x/y is a ratio between two numbers x and y.
The ratio is preserved if both x and y are scaled up or down by the same number n.
This means you can obtain any fraction equivalent to x/y by multiplying both x and y by n, i.e. (n*x)/(n*y).
Then we have 1/4 = (2*1)/(2*4) = 2/8, for example.
Answer:2
Step-by-step explanation:
It's the slope-point formula:

We have:

Therefore, the slope 
Answer:
n=18
Step-by-step explanation:
7n+11?
n=7+11
7+11=18
n=18