The problem asks us to determine function values $f(x)$ for specific $x$ values using the graphs provided in questions 18 and 19.

Analysis of Graph 18:

1. For $f(-3)$:

   • Locate $x = -3$ on the graph. The function value corresponds to the $y$-coordinate at this $x$.
   • The point appears to be at $y = -2$, so $f(-3) = -2$.

2. For $f(1)$:

   • At $x = 1$, find the corresponding $y$-value.
   • It appears to be $y = 4$, so $f(1) = 4$.

3. For $f(0)$:

   • At $x = 0$, the function appears to intersect the $y$-axis at $y = 2$.
   • Thus, $f(0) = 2$.

4. For $f(2)$:

   • At $x = 2$, find the corresponding $y$-value.
   • The graph shows $y = 0$, so $f(2) = 0$.

Analysis of Graph 19:

1. For $f(-4)$:

   • Locate $x = -4$. The $y$-value there appears to be around $y = 3$.
   • Thus, $f(-4) = 3$.

2. For $f(0)$:

   • At $x = 0$, the function intersects the $y$-axis around $y = 0$.
   • So, $f(0) = 0$.

3. For $f(2)$:

   • At $x = 2$, find the corresponding $y$-value.
   • It seems to be around $y = -2$, so $f(2) = -2$.

4. For $f(5)$:

   • At $x = 5$, find the corresponding $y$-value.
   • It appears to be at $y = 3$, so $f(5) = 3$.

Final Answers:

• Graph 18:
  • a) $f(-3) = -2$
  • b) $f(1) = 4$
  • c) $f(0) = 2$
  • d) $f(2) = 0$
• Graph 19:
  • a) $f(-4) = 3$
  • b) $f(0) = 0$
  • c) $f(2) = -2$
  • d) $f(5) = 3$

Would you like further details or explanations on any of these values?

Related Questions:

1. What is the significance of a function's roots, such as $f(2) = 0$ in Graph 18?
2. How do you find the maximum or minimum values from a function's graph?
3. What is the relationship between a graph's intercepts and its equation?
4. How does the slope of a curve change at turning points?
5. How can you determine the domain and range from a function's graph?

Tip: When analyzing graphs, always identify key points like intercepts, turning points, and end behaviors to understand the function’s behavior.