It Graph A Because It It Decreases Cross The Y-axis so it is A. That The Correct Answer
Solution:
1.Graph A: The function i.e the curve is decreasing because , p>q but f(p)< f(q), where p and q are two points on coordinate axis and cuts the Y axis at (0,-7), then it remains constant, i.e for , p=q, → f(p)=f(q).
2. Graph B: The curve increases because by taking two points a, b, such that ,a>b then f(a)>f(b) and cuts y axis at (0,7), then remains constant.
3. Graph C: The curve first decreases then cuts y axis at (0,-7) and then increases.Why it increases and decreases reason is written above.
We can also check whether a curve is increasing or decreasing if the curve is moving upwards then it is increasing and decreasing if it is slanting downwards.
So,OptionA →Graph (A) is correct answer.