Question

Wich pair of lines is perpendicular?
• y=2x-1 and 2y=-x+3
• y=3x+4 and 3y-x=5
• y=-4x+2 and x+4y=6
• y=-6x-3 and 6x-y=4

Answer 1

Do you know the "rule" about lines that are perpendicular to one another?

Answer 2

Nope

Answer 3

Perpendicular lines have negative reciprocal slopes.

Answer 4

Product of slopes must be equal to -1...

Answer 5

To find out what the negative reciprocal slope is, you do -1/slope

So if we had a line with a slope of 3/4, the slope of the line perpendicular to it would be -4/3

Answer 6

@tanmaykhandait negative reciprocal is the same thing. When you do it, the product of the 2 will be -1

Answer 7

Sorry...didn't read ur reply...

Answer 8

That's okay I was just explaining further :)