Given the function f(x) = 5(x+4) − 6, solve for the inverse function when x = 19.

If   f(x) = 5(x + 4) - 6
then y = 5(x + 4) - 6 

By interchanging x & y
⇒  x = 5(y + 4) - 6

⇒   = y + 4 

⇒  y = 

∴ f⁻¹(x) =

When  x = 19 ; 

f⁻¹(19) =
           = 1

∴ when x= 19 the inverse is equal to 1.

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!