A. measure the lengths of the sides in triangles 1 and 2. what do you notice?
they have the same length.
b. what are the side lengths of triangle 3? explain how you know.

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)