Question

A line passes through (-1, 3) and (p, 7) and has a slope of -4/3 Find the value of p.

Answer 1

Explanation:

y - 3 = -
`(4)/(3)` ( x + 1 )

y = -
`(4)/(3)` x -
`(4)/(3)` + 3

y = -
`(4)/(3)` x +
`(5)/(3)`

7 = -
`(4)/(3)` p +
`(5)/(3)`

`(4)/(3)` p = - 7 +
`(5)/(3)`

p = ( -
`(16)/(3)` ) ×
`(3)/(4)` = - 4

Answer 2

slope= (x2-xl)(y2-y1)