<PRE><B>Question 1047791</B>
4 &amp; 5
Standard Form. Ax + By = C
 A, B, C are integers (positive or negative whole numbers)
4. 5x-y = -6
5. 3x + y = 9
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1 &amp; 2
Use point-slope form, {{{y - y[1] = highlight_green(m)(x - x[1])}}}
1. P(3,0)  m = -2   {{{y - 0  = highlight_green(-2)(x - 3)}}} y = -2x + 6
2. p(1,2)  m = 2    {{{y - 2 = highlight_green(2)(x - 1)}}} y = 2x
3.
(-5,-4) and 
(7,-5) m = 1/-12   m ={{{(y[1] - y[2])/(x[1] - x[2] )}}} 
P(-5,-4)
{{{y + 4  = highlight_green(-1/12)(x +5)}}} y = (-1/12)x -53/12 Check Arithmetic
1-3 in point-slope form</PRE>