Answer:
undefined
Step-by-step explanation:
Since we have two points we can use the slope formula
m = (y2-y1)/(x2-x1)
= (-2--6)/(4-4)
= (-2+6) / 0
We cannot divide by 0 so the slope is undefined
Answer: For an oblique or acute triangle sure but not a right triangle
Step-by-step explanation: I guess the sides would work on a regular non right triangle but Pythagorean theorom doesn't work here so the sides don't work for a right triangle
Answer: 
<u>Simplify both sides of the equation</u>
<u></u>
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(Combine Like Terms)

<u>Subtract 12x from both sides</u>
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<u></u>
<u></u>
<u>Add 4.5 to both sides</u>
<u></u>
<u></u>
I could solve this if the x was maybe a y, or there was no x. I am down to this:
8x = -20y + 6