Question 238697
How does one find the  x and y coordinates of y=3x+5?
.
1.  Draw a long "t" in your notebook (long vertically, not horizontaly).  Use the left side for x values and the right side for y values.  This is very useful to keep a tally of values.
2.  Write 1, 2, 3, 4, 5 in the  column.
3.  Plug this value in the equation and find the y values.  There are your coordinates!
.
Problem:
{{{y=3x+5}}}
{{{y=3*1+5}}}
{{{y=3+5}}}
{{{y=8}}} ... now you know when x=1, y=8. This is your first coordinate (1,8).
.
{{{y=3x+5}}}
{{{y=3*2+5}}}
{{{y=6+5}}}
{{{y=11}}} ... now you know when x=2, y=11. This is your second coordinate (2,11).
.
Continue doing the same process for as many points as you want/need.  Remember, you need at least two coordinate points in order to trace a straight line.  All other coordinates you come up with using this equation must/will fall withi this line.
.
Hope this helped.  :)