What is the slope of the line passing through the point (2,-1) and the origin?A.-2B.-1/2C.1/2D.2E.undefined

The answer for this question is [tex] \frac{-1}{2} [/tex], B.
To solve this question, we must use the slope formula. The formula is:
m = [tex] \frac{y_{1} - y}{x_{1} - x} [/tex], with (x₁, y₁) being the coordinates of one point and (x, y) being the coordinates of the other.
Now we can substitute the values of the points (0,0) and (2,-1).
m = [tex] \frac{-1-0}{2-0} [/tex] = [tex] \frac{-1}{2} [/tex], meaning that our answer is B.