Question

1. If ax+by+c= 0 passes through origin then find the value of c.
2. If x+y=3 passes through a point (a,0) then find the value of a.

Please answer these questions fast and I will mark it as brainliest.

Answer 1

as ax+by+c=0 passes through (0,0) so put 0,0 in place of x and y then c=0

Answer 2

1. when ax+by+c=0 passes through origin then it becomes x and y = 0 so a0+b0+c=0 , c= 0
2.x+y=0 is when passed through a then it becomes ax+ay=3 and when after passing 0 , x and y becomes 0, therefore a+a=3 (a=1.5)