The y-intercept is the value of the function y=f(x) when x=0. In mathematical terms, the y-intercept is f(0).
In the case of the function A, we can look at the table for the value of y when x=0. The value for y when x=0 is y=1.
In the case of function B, we have the graph. The y-intercept is the value of y at the intersection of the y-axis and the function, equivalent to the value of y when x=0.
In this case, the value of y is y=2.
Looking at the options, we can conclude that the one that is true is Option B: the y-intercept of function A (y=1) is 1 unit less than the y-intercept of function B (y=2).
Answer: Option B.