1.3 Coordinate Geometry in the x-y Plane

47%

The line $l_1\,$ has the equation $2 x + 3 y + 5 = 0$ The line $l_2\,$ passes through the coordinates $(1, 7)$ and $(5, 1)$ .

Determine, giving full reasons for your answer, whether $l_1\,$ and $l_2\,$ are parallel, perpendicular or neither.

[4]

1.3 Coordinate Geometry in the x-y Plane Questions

47%

The line $l_1\,$ has the equation $2 x + 3 y + 5 = 0$ The line $l_2\,$ passes through the coordinates $(1, 7)$ and $(5, 1)$ .

Determine, giving full reasons for your answer, whether $l_1\,$ and $l_2\,$ are parallel, perpendicular or neither.

[4]