This might be a dumb question, but since the line is increasing, wouldn’t the slope be positive??

Thanks for the help!

You are right. The line is rising as you go from left to right, hence slope should be positive

But the correct answer is C (they are equal).

Yes, if you apply the slope formula \frac{y_2-y_1}{x_2-x_1} , you’ll get

\frac{0-b}{c-0} = \frac{-b}{c} , which is same as Quantity B

(**Note**: \frac{-b}{c} and \frac{b}{-c} are the same quantity)