Question

What is the slope of the line 2x - 5y = -10?
negative five halves

five halves

two fifths

negative two fifths

none of the above

Answer 1

first write this equation in terms of x.

Answer 2

$$
2x - 5y = -10\\
-5y=-2x-10\\
y=\dfrac{-2x-10}{-5}\\
~~={-2\over-5}x-{10 \over -5}\\
~~={2\over5}x-(-2)\\
~~={2\over5}x+2\\
$$
The slope, sitting right there next to the x, should popping right out!

Let me know if you have an questions.