The answer is 36 because in order to find area you multiply length and width so:
A= L x W
9 x 4 = 36
The formula for slope is 
In this case:

so...


-1 <<<The slope
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:
3
Step-by-step explanation:
down 3 over 1 3/1 or 3.
Hope this helps plz hit the crown ;D
2, 3, 5 and 7 the the first 4 prime numbers