all except coordinates (-1, 3)
isolate the y
Add 4y to both sides
3x - 4y+ 4y = 9 + 4y
3x=9 + 4y
subtract 9 from both sides
3x-9= 9-9 + 4y
3x-9=4y
divide both sides by 4
3/4(x)= 4/4(y)
3/4(x) = y
solve for y by substituting (0) for x variable.
and add this to the equation above
y= 3/4(x) - 9/4
when x = 0, y = -9/4
when x= 1, y= -6/4 or -3/2
when x = 2/3, y= -7/4
when x = -1, y= -3
when x = -5, y= -24/4 or -6
