The answer is y = -8x - 20. If you were to use y = 8x - 20 then you'd get 4 = -44, which, obviously, is not true. To fix it all you need to do is add a negative sign in front of the 8. y = -8x - 20.
I think you are missing part of the problem. If you had another equation or a value for x you could solve it.
It is either top left or bottom right, I cannot see the numbers clearly.
Answer:
Step-by-step explanation:
You can use Pythagoras Theorem,

∴
Hope that helps!!
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