Question

How do you find the slope of the line that goes through the given points. (4, 9) and (2 5)?

Answer 1

`"slope "=2`

Explanation:

`"to calculate the slope m use the "color(blue)"gradient formula"`

`•color(white)(x)m=(y_2-y_1)/(x_2-x_1)`

`"let "(x_1,y_1)=(4,9)" and "(x_2,y_2)=(2,5)`

`rArrm=(5-9)/(2-4)=(-4)/(-2)=2`

`"note if the coordinates are reversed the result is the same"`

`"let "(x_1,y_1)=(2,5)" and "(x_2,y_2)=(4,9)`

`rArrm=(9-5)/(4-2)=4/2=2`