Question

http://prntscr.com/bdmkkd someone help me on my last question

Answer 1

@mathmate

Answer 2

d

Answer 3

If you put -3=x in last option, then you will get y=1 which is clear from the graph as well

Answer 4

@sheraz12345
Please refrain from giving direct answer, followed by explanations.
If you want to give the answer at all, the ideal is to give the explanations first, let the user figure out the answer, and you could confirm. Don't forget that you are NOT obliged to give the answer as help.
Advantages of not giving direct answer up-front:
1. avoid user taking answer and not returning to see explanations. This way, user learns nothing.
2. The thinking process is first reasoning, then arrive at a conclusion (answer), not the other way round.
3. You give time and opportunity for the user to absorb the material, think, and perhaps understand material that the question is intended to teach/review.
Thank you.