Question

Two parallel lines differ by _
(A) circle
(C) constant
(B) triangle
(D) none​

Answer 1

Two parallel lines differ by a (c)constant.

• The general equation of a line is y = m x + c
• Here, m is the slope of the line and c is a constant.
• Now, we know that slopes of parallel lines are equal.
• Hence, the value of m is same in all parallel lines.
• The only difference in equations of parallel lines is in the term c
• Example of parallel lines in general is
• y = m x + c   &   y = m x + a.
• These two lines are parallel since both have slope equal to m and a different constant term.

Answer 2

Step-by-step explanation:

it is c it is constant because parallel lines will be differ by constant only