options a,b,c are the right answer.
a linear parent function is always represented as y = x
if we write this function in the form of y=mx+c
now if we plot a graph we will find these characteristics:
1) y intercept of the graph is zero so its a straight line passing through origin.
2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.
3) it's slope is one.
in if you ask questions, the points are taken from your total and given to the one who answered it..
so if i have 30 points and i ask a question for 5 points, then when someone asks a question i will lose 5 points and the answerer earns 5