Please help me with this math problem!?

Question

This one is really tricky, and i don't remember how to do it!

Find the value of "K" for which the like kx+5y= -4 is perpindicular to the y-axis.

try it out, someone must know how to solve this!

Answer 1

what you are talking about is a horizontal line, or slope of zero...

y = 0x + b.. OR... y = b

k = 0 for a horizontal line.