Step-by-step explanation:
The notation a ≥ b or a ⩾ b means that a is greater than or equal to b,
We have your question that asks to graph y + 8 ≥ 9 which means the same as y+ 8 ⩾ 9.
We see y as zero we graph an open dot at zero and draw a line to 8.49, here this means it is equal and and not greater than 8 as they are referring to whole numbers 8 and 9. we then close the dot at 8.49, and keep the number under 8.5. this way it is consistent with the equality they state for number 8.
if the notation was facing the other way it would all point as a decrease potentially and 7.5 would be closed.
IF it was a > or < then it would mean strict greater or less, never equal to it becomes confirmation we look for being of larger or of greater.
