Question 378276
  <pre><font size = 3 color = "indigo"><b>
Hi,
the standard slope-intercept form for an equation of a line y = mx + b  
where m is the slope and b the y-intercept.  y =  4x -3  slope= 4
green line is y = 4x-3, x = 3 is the blue line and y =-4 is the red line
{{{drawing(300,300,-10,10,-10,10,blue(line(3,10,3,-10)),grid(1),graph(300,300,-10,10,-10,10,-4, 4x -3 ))}}}