Step-by-step explanation:
3) The equation of the graph is given by,

So, slope = 0 option A
4)The line passes through two given points in the fig. , (3,2) and (4,-1)
slope of the graph is given by

option D
5)

General equation in slope -intercept form

where, m is the slope and c is the y-intercept
Here, in this case m= -1
option C
6)

slope of the graph = 1
option C