answer : slope is -2/3
line should look like
y = mx + b
slope is m or the number next to x
slope refers to the rate or speed of something
make 2x + 3y = 12 look like y = mx + b
2x + 3y = 12
3y = -2x + 12
y = (-2x + 12)/3
y = -2/3x + 12/3
y = -2/3x + 4
slope is -2/3
b is called the y intercept
b is +4 which is where the line passes thru in the y axis at (0,4)
when x is 0 but y is not then that means the graph is not proportional