For this case we have a function of the form[tex]y = f (x)[/tex]where:
[tex]f (x) = - 2x-1[/tex]
We must find the value of the function when[tex]x = -7[/tex]. So:
[tex]f (-7) = - 2 (-7) -1[/tex]
By definition we have to:
[tex]- * - = +\\f (-7) = 14-1 = 13[/tex]
Thus, the value of the function is [tex]y = 13[/tex]
Answer:
[tex]y = f (-7) = 13[/tex]
