Pick the points that make the systems of equations true.
select all that apply (more than one point is possible).

First, to the author of this piece of instruction.  A system of equations would give multiple curves which intersect, as depicted here by a pair of crossing lines.  But presumably here the solution space is intended to be the green area.  That makes this a system of inequalities, not of equations.  Fix it please, you're confusing the children.

We check each point to see if it's in the green space.

a) (2,2)  CHECK

b) (0,4) nope

c) (6,1) CHECK

d) (1,6) nope

e) (-2,8) nope

Angad the eldest=32+9=41year

Step-by-step explanation:

Let peter is x years old. Then Angad is x + 9 years old and Krutika is

x - 12 years old. Then

x+(x+9)+(x−12)=75⟹3x−21=75⟹x−7=25

⟹x=32years

Angad the eldest=32+9=41year