Question

help with this question please???

Answer 1

i dont get what the white and black points mean...

Answer 2

Black point means that the value is included, and white point means that the value is not included. When you have x>=2 for example, you put a black point on 2 and paint the line after 2. If you have x > 2 , you put a white point on 2 and paint the line after 2, because 2 is not included.

Answer 3

Do you get it ? In the inequation of the question the signal is >=, so, you will use a black point.

Answer 4

4x - 16 >= -12
4x >= -12 + 16
4x >= 4
x >= 1

You will need a closed circle because of the equal sign.
Greater then 1 means shading to the right.
So you line graph will have a closed circle and it will be shaded to the right.
You can find out which one it is now.

Answer 5

thank you both so much!

Answer 6

thats what we are here for :)