# Thread: Slope of a perpendicular line

1. ## Slope of a perpendicular line

What is the slope of a perpendicular line to the line

2y + 3x=4

2. Originally Posted by heatherblack87
What is the slope of a perpendicular line to the line

2y + 3x=4
You first need to get the gradient m of the line 2y + 3x = 4. Can you do this? Then the gradient of the perpendicular line is -1/m.

3. I don't understand the -1/m I am sorry math is my absolute worst subject

4. Originally Posted by heatherblack87
I don't understand the -1/m I am sorry math is my absolute worst subject
Can you get the gradient of 2y + 3x = 4?