Answer:
-5 = a; (-5, 7)
Explanation:
-y₁ + y₂\-x₁ + x₂ = m
-7 + 5\a + 8
a + 8 = 3
- 8 - 8
_________
a = -5
Obviously, we have to set the denominator equal to three to find the value of a. Parallel lines have SIMILAR RATE OF CHANGES [SLOPES], so -⅔ remains the same.
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