The value of a function is the value the function assumes for a given argument
The value of x, when j(x) = -5 is x = 15
Reason:
The given function is presented as follows;
[tex]j(x) = -\dfrac{4}{5} \cdot x + 7[/tex]
j(x) = -5
We get;
[tex]-5 = -\dfrac{4}{5} \cdot x + 7[/tex]
[tex]-5 - 7= -12 =-\dfrac{4}{5} \cdot x[/tex]
[tex]\dfrac{4}{5} \cdot x = 12[/tex]
4·x = 12 × 5 = 60
[tex]x = \dfrac{60}{4} = 15[/tex]
The value of x = 15
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