3) The equation of a line in slope-intercept form is:
y = mx + b
where m is the slope, and b is the y-intercept.
Substituting with the point (5, 0), that is, x = 5 and y = 0, and m = -1, we get:
0 = (-1)*5 + b
0 = -5 + b
5 = b
Then, the equation of the line is:
y = -x + 5
We can graph the line connecting 2 points. Replacing x = 0 in the above equation, we get:
y = -0 + 5
y = 5
Then, the line passes through the point (0,5)
We also know that the line passes through the point (5,0)
The graph is: