<PRE><B>Question 56507</B>
  I need to write the equation of the line with given slope and y-intercept.  Then I need to graph each line using the slope and y-intercept.
Slope:  -2; y-intercept:  (0, 4)
Hi Sher,
The slope-intercept form of a line is: {{{highlight(y=mx+b)}}}, where m=slope and (0,b) is the y-intercept.
This time m=-2 and b=4, substitute them into your formula and you have:
{{{highlight(y=-2x+4)}}}
To graph this, plot (0,4), from that point, use your slope to graph another point slope={{{m=rise/run=-2/1}}}, this time your slope is -, so go DOWN 2 units and right 1 unit and plot another point.  You should be at (1,2).  Connect the points and you should have a line that looks like:
{{{graph(300,200,-10,10,-10,10,-2x+4)}}}
Happy Calculating, Sher!!!
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