Question

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

Answer 1

Answer:

7x-y=5

               21x-3y=10

Step-by-step explanation:MAKE THEM a pair of linear equation7x-y=5 that is   7x-y-5=0  ------------>eq 1,similarly 21x-3y-10 =0 ------------>eq2now , compare them ......... a₁/a₂=>7/21 = 1/3b₁/b₂ =1/3c₁/c₂→5/10→1/2now a₁/a₂=b₁/b₂≠c₁/c₂   ......this shows that graph of the given equation will be parallel LINE .

Answer 2

Answer:

parallel

Step-by-step explanation:

as here a1 = 7, b1 = -1, c1 =-5

a2 = 21, b2 = -3, c2 = -10

now a1/a2 = b1/b2 not= c1/c2

so the lines will never meet

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