Determine whether the lines connecting each pair of points are parallel or perpendicular.
Line 1: (-4, 3) and (5, 0)
Line 2: (1, -2) and (3, 4)

Its supposed to be 1/3 for both but i got 1/2 for the second line.

Question

Determine whether the lines connecting each pair of points are parallel or perpendicular.
    Line 1: (-4, 3) and (5, 0)
    Line 2: (1, -2) and (3, 4)

Its supposed to be 1/3 for both but i got 1/2 for the second line.

anonymous · Answer

$$m=\frac{ y2-y1 }{ x2-x1 }$$

usukidoll · Answer

perpendicular lines <--- there's an intersection
parallel lines <---- no intersection

lonnie2018 · Answer

ii'm not doing it by graphing. its an equation.

mathstudent55 · Answer

Find the slopes again. You have them both wrong.

mathstudent55 · Answer

Also, what you say is supposed to be, isn't correct.

mathstudent55 · Answer

Line 1: (-4, 3) and (5, 0)

$m_1 = \dfrac{0 - 3}{5 - (-4)} $


 Line 2: (1, -2) and (3, 4)

$m_2 = \dfrac{4 - (-2)}{3 - 1} $

mathstudent55 · Answer

@Lonnie2018
Use my last answer and find the two slopes.

usukidoll · Answer

also parallel lines have the same slope
perpendicular lines have different slopes and we use this formula 
$$m_1 \times m_2=-1$$