Identify four ordered pairs on the graph of the function

Question

f(x)=−2x+9/x−1

 

Identify four ordered pairs on the graph of the function.

Answer 1

just plug in any 4 simple values for x, such as integers, maybe 1, 2, 3 and 4, then combine them with the y values you generate: f(1) = 2(1) + 9/(1) -1 = 2+9-1 = 10, the point is (1,10)

do the same plugging in 2, 3 and 4:

f(2) = 2(2) +9/2 -1 = 4+ 4.5-1 = 7.5 that's the point (2,7.5)

f(3) = 6 +9/3 -1 = 8 that's the point (3,8)

f(4) = 8 + 9/4 - 1 = 9.25 the point (4,9.25)