Question

Line a passes through the points (-2,1) and (1,-1). Line b passes through the points (-3,2) and (-1,0). DO lines a and b intersect? Explain.

Answer 1

You can draw a graph.

(-3,2) |

(-2,1) |

___.__(-1,0)__ | __.____.___

| (1,-1)

|

|

As shown, the lines are intersecting. You can also tell that they are intersecting because if you draw a triangle, they are on the same line. (-3,2) and (-2,1) are directly diagonally from each other.

Hope this helps!