You need four new pillows. you decide to buy neither the least expensive nor the most expensive. how much will your pillows cost? medium pillow: $18.49, large pillow: $22.69 and small pillow: $15.99 (re-worded)

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

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.