Question 873332
This a line and note that the standard form for a line is y = mx + b, where m is the slope and b is the y intercept
m = (Y2 - Y1) / (x2 - X1) = (0 - 1) / (4 - 2) = -1/2
so far we have
y = -x/2 + b
let's use the point (4, 0)
0 = -4/2 + b
b = 2
our function is
f(x) = -x/2 + 2