Question 103262
maybe it would help to look at the equation this way:
{{{y= (-3/4)(x/1)+3}}} 
Now when you use your t chart you just multiply the fractions and then reduce if possible.
Lets try some numbers for x
try 4
{{{y= (-3/4)(x/1)+3}}}
{{{y= (-3/4)(4/1)+3}}}
{{{y= (-12/4)+3}}}
{{{y= -3+3}}}
{{{y=0}}}
Ok so our first point is (4,0)
Try -4
{{{y= (-3/4)(x/1)+3}}}
{{{y= (-3/4)(-4/1)+3}}}
{{{y= (12/4)+3}}}
{{{y= 3+3}}}
{{{y=6}}}
Ok so our next point is (-4,6)
Try 0
{{{y= (-3/4)(x/1)+3}}}
{{{y= (-3/4)(0/1)+3}}}
{{{y= (0/4)+3}}}
{{{y= 0+3}}}
{{{y=3}}}
Ok so our next point is (0,3)
So if we plot these points on a graph and draw a line through them we get this:

{{{ graph( 500, 500, -10, 10, -10, 10, (-3x/4)+3) }}} 
hope this helped