Answer:
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<u>First, find the perpendicular slope</u>
y = 0.3x + 6 ⇒ m = 0.3 = 
perpendicular slope = 
<u>Next, input</u> the point (x₁, y₁) and slope (m) into the Point-Slope formula
y - y₁ = m(x - x₁)
y - (-8) =
(x - 3)
y + 8 =
+ 10
y =
+ 2
Answer: a = -3
Explanations:
The given equation is:

This can be re-written as:

Collect like terms:

Cross multiply:

To verify if the solution is correct, substitute a = -3 into the question given. If the Right Hand Side equals the Left Hand Side, then the solution is correct.

Since the Left Hand Side = Right Hand Side = 7, the solution a = -3 is correct