Question 4(1 point) A company finds that if it charges a dollars for a cell phone, it can expect to sell 1,000 – 2x phones. The company uses the function - defined by r(x) = 2 · (1,000 – 22) to model the expected revenue, in dollars, from selling cell phones at dollars each. Use graphing technology to graph the function r. What do the z-intercepts mean in this situation?

b.an increase in a causes b to decrease

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.

step-by-step explanation: