Question 437302
You substitute 0 for x, like this:


y = -3(0)


Then solve for y. You will get y = 0, so the ordered pair (0,0) lies on the line.


We won't substitute 0 for y, since we will actually obtain the same ordered pair. We can substitute x = 1, since x is our independent variable and the function is defined everywhere. If we substitute x = 1, y = -3(1) = -3, so (1, -3) is also on the line.


We can connect the two points together and draw a line:


{{{graph(200,200,-5,5,-5,5,-3x)}}}