Question

....is a solution of equation :x+y -12=0

Answer 1

Step-by-step explanation:

Given linear equation is x+y=0

(A) If x=2 and y=2

Then, 2+2=4



=0

Then this is not a solution of x+y=0

(B) If x=2 and y=3

Then, 2+3=5



=0

Then, this is not a solution of x+y=0

(C) If x=1 and y=−1

Then, 1−1=0=0

So, this is the solution of x+y=0

(D) If x=4 and y=−4

Then, 4−4=0=0

So, this is the solution of x+y=0

Thus (C) and (D) are the solutions of x+y=0

Answer 2

Answer:

A linear equation is of the form ax + b = c. Geometrically, it represents a line. The set of all (x, y) which satisfy the given equation are all the points on the line. if x = 1, then y = (7 - x) = (7 - 1) = 6, therefore, (1, 6) is one solution