ELLO PEOPLES. ANSWER THIS PLS (better be right) The graph below shows the cost of pens based on the number of pens in a pack. What would be the cost of one pen?

1.5 dollars

Step-by-step explanation:

Step-by-step explanation:

We notice that every time one the number increases, it increases by 3.  To find it, first we subtract 4.5 and 3 to get 1.5 and this point is going to be (2, 1.5) Now, to find the cost of 1, we have to subtract 3 again to get (1, -1.5)

The cost of one pen is -1.5

2

step-by-step explanation:

vvvvv

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.