Question

The equation of line passing through (0, 0) with slope – 1 is [ ]

a) x + y = 0 b) x – y = 0 c) x + y = 1 d) x – y = 1​

Answer 1

Answer:

eqn. of general line is y= MX + c here c=0

so eqn. becomes y= -x

x+y=0

Answer 2

given that the line passes through (0,0)

so here options (a) (b) are correct but the second condition is that the slope is -1

so this condition is satisfied by option (a) so that will be the answer

slope = -x coordinate/y coordinate