Answer:
3/4 and -5/3
Explanation:
You were on the right track for the first question. Instead of addition, use subtraction for both the denominator and numerator.
-4 - 8 = -12
-10 - 6 = -16
-12/-16 can be simplified to 3/4. The slope is 3/4. As a decimal, the slope is 0.75.
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2nd question:
3 - (-3) = 6
-1 - 9 = -10
-10/6 can be simplified to -5/3.