F(x) = (1/2)x + 4
Plug y in for f(x).
y = (1/2)x + 4
Swap x and y. 
x = (1/2)y + 4
Solve the equation for y =.
Subtract 4 from both sides. 
x - 4 = (1/2)y
Multiply each term 2.
2x - 8 = y
Plug f^-1(x) in for y. 
f^-1(x) = 2x - 8
f^-1(4) = 2(4) - 8
f^-1(4) = 0
        
             
        
        
        
The equation of the line is y = 0.8x - 1.4 if the  slope of the line is 0.8 and line passes through coordinates (-2,-3)
<h3>What is a straight line?</h3>
A straight line is a combination of endless points joined on both sides of the point.
The slope 'm' of any straight line is given by:

The slope m = 0.8
The line passing through coordinates (-2,-3) 
y = mx + c
y = 0.8x + c
Plug the point in the equation.
-3 = 0.8(-2) + c
c = -1.4
y = 0.8x - 1.4
 
Thus, the equation of the line is y = 0.8x - 1.4 if the  slope of the line is 0.8 and line passes through coordinates (-2,-3)
 
Learn more about the straight line here:
brainly.com/question/3493733
#SPJ1
 
        
             
        
        
        
Answer:
2
Step-by-step explanation:
I think :) 
 
        
                    
             
        
        
        
The anser is 20 that what i think