If you want to draw a table, you need to give values to the X and resolve the equation to find Y.
For example with y=-3x+5
X=0
Y= -3 x 0 + 5
Y= 5
X=1
Y = -3x1 + 5
Y=2
X=2
Y= -3 x 2 + 5
Y= -1
Whe you have some numbers, draw an X Y axis and you can graphic it.
