Question

How do you graph `f(x)=(1/2)x` by plotting points?

Answer 1

To find the 5 main points of the linear function, use `x=-2, -1, -0, 1,2` to find your y-coordinates.

Mapping rule:
`(x, y)=(x, 1/2x)`

`1. (-2, 1/2(-2))=(-2,-1)`
`2. (-1, 1/2(-1))=(-1,-1/2)`
`3. (0, 1/2(0))=(0,0)`
`4. (1, 1/2(1))=(1,1/2)`
`5. (2, 1/2(2))=(2,1)`

Plot the points and you will get a graph that looks like this:

graph{1/2x [-7.9, 7.9, -3.946, 3.95]}