Question

Using the domain values {-1, 0, 4}, how do you find the range values for relation f(x)=3x-8?

Answer 1

Range `f(x) in {color(red)(-11),color(red)(-8),color(red)4}`

Explanation:

Given the domain `{color(magenta)(-1),color(blue)0,color(green)4}`
for the function `f(color(brown)x)=3color(brown)x-8`
the range will be
`color(white)("XXX"){f(color(brown)x=color(magenta)(-1))=3xx(color(magenta)(-1))-8=color(red)(-11)`,
`color(white)("XXX{")f(color(brown)x=color(blue)0)=3xxcolor(blue)0-8=color(red)(-8)`,
`color(white)("XXX{")f(color(brown)x=color(green)4)=3xxcolor(green)4-8=color(red)4`
`color(white)("XXX")}`