We can solve for x or solve for y,
for x
y+6=5x
divide both sides by 5

=x
for y
y+6=5x
minus 6 from both sides
y=5x-6
The answer is x=-7
8x-7x-2=-9
8x-7x=-9+2
-7
-(7+8/100)
= -(7+4/50)
= -(7+2/25)
= -177/25
Answer: A
Explanation do Pythagorean theorem and find the third side. Then do adjacent/hypotenuse.
To solve this, I would square root all of the possible answers and see which ones the arrow falls between. After that I would choose the answer closest to it.
Hope this helps!