Question

Please Help me. Also if you could show your work thatd be great.

Answer 1

3)
`all \: real \: numbers`,
`( - \infty , \infty )`, or
`- \infty \leqslant x \leqslant \infty` (same thing)

4)
`- \infty < y < 0` or
`( - \infty ,0)` (same thing)

5)
`-2` or
`(0, -2)` (same thing)

Explanation:

3) Domain represents the amount of
`x`-values in a function. The image shows that the function's arrows point in both directions (right and left), infinitely, so the domain would be
`all \: real \: numbers`,
`( - \infty , \infty )`, or
`- \infty \leqslant x \leqslant \infty`(same thing).

4) Range represents the amount of
`y`-values in a function. The function goes downward forever (
`- \infty < y`) by the indication of an arrow and halts just under the y-axis (
`y < 0`). After combining these two inequalities, you see that the range is
`- \infty < y < 0` or
`( - \infty ,0)` (same thing).

5) The
`y`-intercept is where the function crosses the
`y`-axis. In this function, the
`y`-intercept is
`-2` or
`(0, -2)` (same thing).