Whoever can answer this correctly gets Brainliest + 20 Points. Please tell/explain how you got your answer so I can be on the same page.

The answer is -2

Step-by-step explanation:

m=y²-y¹/x²-x¹

m=1-(-7)/(-1)-3

m=8/-4

m=-2

step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.