Question

How do you find five ordered pairs of `4x - y = 8`?

Answer 1

See below for method and sample pairs

Explanation:

If `4x-y=8`
then `y=4x-8`

Choosing 5 arbitrary values for `x`
`color(white)("XXX")`(I chose {0,1,2,3,4})
and solve for corresponding values of `y`

#{: (ul(x),ul(y=4x-8)), (0,-8), (1,-4), (2,color(white)("x")0), (3,color(white)("x")4), (4,color(white)("x")8) :}#

would give the 5 pairs:
`(0,-8), (1,-4),(2,0),(3,4),(4,8)`