Question 102015
The y-intercept is the value of y at the point where the line crosses the y axis(x=0). 
The x-intercept is the value of x at the point where the line crosses the x axis(y=0). If we set x=0, we get y=0. 
So the x intercept and the y intercept are the same value of 0. 
You know the line goes through the origin (0,0). 
Pick another value for x and find the y and then you'll have two points on the line. 
For example, for x=1, y=4x=4(1)=4 and (1,4) is another point on the line.  
{{{ graph( 300, 300, -10, 10, -10, 10, 4x) }}}