1. **Problem A:** Sketch the graph of the relation $y=1-x^3$ and find its domain and range.
2. The formula is $y=1-x^3$. This is a cubic function shifted up by 1.
3. The domain of a cubic function is all real numbers because $x$ can take any value.
4. The range is also all real numbers because as $x$ goes to $\pm \infty$, $y$ goes to $\mp \infty$ respectively.
5. To sketch, plot points for values of $x$ such as $-2, -1, 0, 1, 2$:
- $x=-2 \Rightarrow y=1-(-2)^3=1+8=9$
- $x=-1 \Rightarrow y=1-(-1)^3=1+1=2$
- $x=0 \Rightarrow y=1-0=1$
- $x=1 \Rightarrow y=1-1=0$
- $x=2 \Rightarrow y=1-8=-7$
6. The graph passes through these points and has the typical cubic shape flipped vertically and shifted.
---
7. **Problem B:** Sketch the graph of the relation defined by the inequalities $y < -2x + 2$ and $y > x - 3$ and find its domain and range.
8. These inequalities describe the region between two lines:
- Line 1: $y = -2x + 2$
- Line 2: $y = x - 3$
9. The domain is all $x$ values where the two inequalities overlap.
10. Find the intersection point by solving:
$$-2x + 2 = x - 3$$
$$-2x - x = -3 - 2$$
$$-3x = -5$$
$$x = \frac{5}{3}$$
11. Substitute $x=\frac{5}{3}$ into one line to find $y$:
$$y = x - 3 = \frac{5}{3} - 3 = \frac{5}{3} - \frac{9}{3} = -\frac{4}{3}$$
12. The intersection point is $\left(\frac{5}{3}, -\frac{4}{3}\right)$.
13. The region satisfying both inequalities is the area between these lines below $y=-2x+2$ and above $y=x-3$.
14. Since the lines extend infinitely, the domain is all real numbers.
15. The range is all $y$ values between the two lines, which depends on $x$ but is bounded between these lines.
---
**Final answers:**
- Problem A: Domain is $\mathbb{R}$, Range is $\mathbb{R}$.
- Problem B: Domain is $\mathbb{R}$, Range is the set of $y$ such that $x-3 < y < -2x+2$ for all $x$ in $\mathbb{R}$.
Relation Graphs
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.