coordinate geometry question from powerprep

[shrutib]

In the coordinate plane line l and line k intersect at point (4,3)is the product of their slopes negative?

1. the product of x intercepts of line l and k is positive.

2. the product of y intercepts of l and k is negative.

I got the answer right, but want to see the approach. Thank you.

[Mike@Magoosh]

Hi, there. I'm happy to help with this.

This was an intensely visual explanation, so I created a pdf with all the images.

Here's another DS question about slopes, for further practice.
https://gmat.magoosh.com/questions/1026
When you submit your answer, the following page will have the video explanation.

I hope all this helps. Let me know if you have any further questions.

Mike

[1947]

Thanks for the explaination Mike...but the link does not open the practice question

[Mike@Magoosh]

Thanks for the explaination Mike...but the link does not open the practice question

I'm sorry --- I didn't activate the link. I just activated it, so it should work now. Sorry about the delay!

Mike