Question

The pair of equations 7x – y = 5; 21x – 3y = 10 represents two lines which are

Answer 1

Answer:

Graphically, the pair of equations 7x - y = 5 and 21x - 3y = 10 represent two lines which are parallel lines.

Step-by-step explanation:

The first equation is 7x - y = 5

The second equation is 21x - 3y = 10

Multiplying 3 to the first equation, we get

21x - 3y = 15, whose left hand side is similar to the that of the second equation.

The constant part for the equations are different.

Thus the lines are parallel to each other.