<PRE><B>Question 23374</B>
If you know that the slope is 4 {{{(rise)/(run) = 4/1}}}, and it passes through the point (2,4), then your first step is to use y=mx+b to find b which is the y-intercept.  Substitute everything you know (m=4, x= 2 and y = 4) into that formula:


y=mx+b
4 = 4*2 + b
4=8 +b
b=-4


So graph the line by starting at the y-intercept going DOWN 4 units on the y-axis.  Put a point there.  Then with your pencil on that point, rise UP 4, and go RIGHT 1, and put another point.  Connect the points, and that should give you a line that goes through the points you mentioned in the problem.  The equation of the line is {{{y=4x-4}}}, and the graph should look like this:

{{{graph(400,400, -10,10, -10, 10, 4x-4) }}}


R^2 at SCC  </PRE>