Question

Show that that two lines x-2y+7=0 and 2x+y-16=0 are perpendicular each other

need Working out please

Answer 1

you can use the fact that product of slopes of two perpendicular line is -1.

Answer 2

well what is it in slope intercept form??

Answer 3

just write it out for me

Answer 4

can you reduce the equations above to y=mx+c form? If yes, the m part is slope.

Answer 5

are you still confused because i can show you step by step

Answer 6

yea im pretty much confused

Answer 7

ok if you want to change a equation into a slope intercept form you must leave the y alone like this equation (x-2y+7=0) you must leave the y alone (x - x - 2y + 7 - 7 = 0 - x -7) which becomes (2y = -x - 7) =(y = -1/2(x) - 7/2)

Answer 8

try the second equation

Answer 9

are you there?

Answer 10

yea im here
im doing consumer arithmetics

Answer 11

hmmm...