Solution
For this case we have the following equation given:
16 +x = -4y
We need to remember that the general equation for a line is given by:
y = mx +b
And if we rewrite the expression given in these terms we got:
4y = -16-x
And if we divide both sides by 4 we got:
y = -4 -1/4 x
Then the final answer would be:
-1/4