Question

Find the value of x so that the function has the given value

j(x) = -4/3x + 7; j (x) = -5​

Answer 1

x = 13
`(2)/(3)`

Explanation:

j(x) =
`(-4)/(3)` x + 7 Substitute -5 for x

j(-5) =
`(-4)/(3 )` ( -5) + 7

or

j(-5) =
`((-4)/(3))`
`((-5)/(1))` + 7 A negative times a negative is a positive

j(-5) =
`(20)/(3)` + 7

j(-5) =
`(20)/(3)` +
`(21)/(3)`
`(21)/(3)` means the same thing as 7

j(-5) =
`(41)/(3)` = 13
`(2)/(3)`