What are the rules for subtraction and multiplication with negative numbers???

Step-by-step explanation:

+(+)Two like signs become a positive sign3+(+2) = 3 + 2 = 5

−(−)6−(−3) = 6 + 3 = 9

+(−)Two unlike signs become a negative sign7+(−2) = 7 − 2 = 5

−(+)8−(+2) = 8 − 2 = 6

anser is a

step-by-step explanation:

negitive slope

yes. we do proportions in probabilities.