Identify the angle relationship of each pair of angles

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]

The function models the number of accidents

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?