Question

Can someone help me! Please show pictures of the number line thank you!

Answer 1

The graph is an open circle at -1 with the line going towards the positive numbers.

Answer 2

First, we have to make $w$ the subject of the equation:

$w - 0.9 > -2.1\\w > -2.1 + 0.9\\w > -1.2$

This shows that $w$ is less than but not equal to $-1.2$. So we are going to use an arrow that has a non-shaded circle. Since the symbol is the greater than symbol, or >, the arrow will point to the right. Thus, the arrow we choose will be the last arrow.

Now since we are comparing $w$ with $-1.2$, we place the arrow above the $-1.2$ point. That's how he place the arrow in the number line.