How do you find the slope given (11, -2) and (2, -2)?

2 Answers
Apr 19, 2018

See below..

Explanation:

Slope of a line mm passing through (x_1,y_1)(x1,y1) and (x_2,y_2)(x2,y2) is given by

" "m=(y_2-y_1)/(x_2-x_1) m=y2y1x2x1

Plugging in the given values we get

" "m=(11-2)/(-2+2) m=1122+2

which is undefined, and this gives rise to a special case. The line with undefined slope is a line parallel to the yy-axis.

Also, slope is tan thetatanθ. When tan theta=tanθ=undefined, then theta=pi/2θ=π2, which is parallel to yy-axis.

Apr 19, 2018

Nothing, undefined, or 00

Explanation:

We can find the slope or gradient using:

(Deltay)/(Deltax) Where Delta means the 'change in...'

Remembering the coordinates are (x,y)

11 -> 2 we have to -9

-2 -> -2 we do nothing.

Therefore using (Deltay)/(Deltax) -> 0/-9 -> which is nothing, or undefined.

As dividing by 0, or multiplying by 0 gives nothing.