B is the correct answer
hope this helps
Let's convert one of these numbers:
1 foot = 12 inches
9 feet were 9*12=108 inches
so the ratio would be 42: 108
or we can simplify it: divide by 2:
21:54
divide by 3:
7:18
A ratio always stays the same no matter the unit or currency, so it doesn't matter which unit we convert it to.
Slope = (2+5)/(-3-1) = 7/-4 = -7/4
answer is B -7/4
D has the commutative property because it just flip flopped the numbers.
