Question 321297
The equation {{{x=2}}} is simply a vertical line that cuts through the tick mark '2' on the x axis (as shown below). Because it's a vertical line, the slope is undefined (ie it doesn't exist) and there is no y-intercept (since the line NEVER crosses the y axis). So if you've never seen these type of problems, then it's perfectly understandable why you're stuck.



Graph of {{{x=2}}} (green vertical line)


{{{drawing(500,500,-10,10,-10,10,
  grid(1),
  graph(500,500,-10,10,-10,10,0),
  green(line(2,12,2,-12))
)}}}