Answer:
-9/5
Explanation:
The usual formula of a line is y = mx + b, where m is the slope and b is the y-intercept.
Knowing this, we need to convert our equation into that form to find our m.
9x + 5y = 1
We subtract 9x on both sides:
9x + 5y - 9x = -9x + 1
5y = -9x + 1
Now we multiply by 1/5 on both sides:
5y * 1/5 = (-9x + 1) * 1/5
y = -9/5x + 1/5
Therefore, the slope of the line is m = -9/5