Answer:
-1
Explanation:
The input value for which f(x) = g(x) is true is -1 
 
The formula for calculating the equation of a line is expressed as: 
 
 
 
m is the slope 
 
b is the y-intercept 
 
For table 1, 
 
Get the slope: 
 
 
 
Use the coordinate (-2, 3) and m = 0 to get the value of "b" 
 
 
 
The required function for table 1 is f(x) = 3 
 
For table 2: 
 
Get the slope: 
 
 
Use the coordinate (-2, 4) and m = -1 to get the value of "b" 
 
 
The required function for table 2 is g(x) = -x + 2 
 
If the function f(x) = g(x), hence: 
 
-x + 2 = 3 
 
-x = 3 - 2 
 
-x = 1 
 
x = -1 
 
Hence the input value for which f(x) = g(x) is true is -1