X=21
See photo I provided below
Y = mx + b
y = -4x -2
trying option 1
-8x + 2y = -4
2y = -4 + 8x
y = -2 + 4x
so its incorrect
Now trying option 2
8x + 2y = -4
2y = -4 - 8x
y = -2 - 4x
y = -4x -2
so Option B is correct
Yes it is a rational number because if you divide 5 by 4 then you would get 1.25
Hope this helps you :)
~ Your Cookie Monster
PEMDAS- Parenthesis, Exponent, Multiplication, Division, Addition, Subtraction.
