Question

ax+by=c, bx-ay=c.
Sol is
a. perpendicular line.
b. parallel lines
c. intersect with an acute angle
d. interact more than one point

Answer 1

Answer:

Step-by-step explanation:

Hope this helps. All the best

Answer 2

Let ax + by = c is line 1
and bx - ay = c is line 2

Slope of line 1 = -b/a
Slope of line 2 = a/b

Product of slope of both lines = (-b/a)(a/b)
= (-1)

And according to theorem,
If product of slope of two lines is (-1) then both lines are perpendicular.

Answer -> Option (a) "Perpendicular lines"