Question

What is the slope of a line that with the points (1,2) and (2,0)?

Answer 1

slope = -2

Explanation:

To find the gradient (slope) of a line passing through 2 points , use the `color(blue)" gradient formula "`

`m = (y_2 - y_1)/(x_2 - x_1)`

where `(x_1,y_1)" and " (x_2,y_2)" are the coords of 2 points "`

let `(x_1,y_1)=(1,2)" and " (x_2,y_2)=(2,0)`

now substitute these values into the formula

`rArr m = (0 - 2 )/(2 - 1 ) = (-2)/1 = -2`