11. The slope of the line is -3. If we want another two points, we need the equation of the line.
Use the following formula:
y - yo = m(x - xo)
m is the slope of the line and (xo,yo) is any point on the line. Use (xo,yo) = (5,-2) and m=-3 and solve for y, as follow:
y - (-2) = -3(x - 5)
y + 2 = -3x + 15
y = -3x + 15 - 2
y = -3x + 13
Now, replace any two values of x, for example x= 1 and x=3:
y = -3(1) + 13 = -3 + 13 = 10
y = -3(3) + 13 = -9 + 13 = 4
Then, you can conclude that (1,10) and (3,4)