Please help now!! I need a good explanation on how to graph these problems. They are five points on a graph and I need to know how to solve for them. Please give a good explanation. Will give brainliest.

This equation is represented in the form y=mx+b with m being the slope and b being the y intercept. This doesnt have a y-intercept so the slope on the graph would start at (0,0). The slope is -3/1 in this problem meaning you go down three units and right 1 unit. then to get a line you do the opposite of the slope. So you would go up three units and left 1 unit from the point (0,0). then connect those two points and you get a line. hope this helps

P(x) = 20x - 1600.

Step-by-step explanation:

The revenue of the company is obtained by selling each unit of output for $45.

So. for x units of output sold the revenue will be given by  

R(x) = 45x (1)

Again, the company has the expense of fixed $1600 and another expense of $25 per output of items.

Hence, for x items the cost will be given by  

C(x) = 1600 + 25x

Therefore, the function that models the profit of the company based upon the conditions for revenue and cost will be P(x) = R(x) - C(x)

⇒ P(x) = 45x -(1600 + 25x) = 20x - 1600. (Answer)