How can you determine if a function is linear or nonlinear from the graph of the

A linear function is in the form y = mx + b or f(x) = mx + b, where m is the slope or rate of change and b is the y-intercept or where the graph of the line crosses the y axis. You will notice that this function is degree 1 meaning that the x variable has an exponent of 1.

On the given information i disagree. Although AB = BC we do not know whether m < ABD = m < BCD which is required for congruency by SAS.

(b) if AD = CD then we have all three sides of the 2 triangles equal and they are congruent by SSS.