To solve this problem effectively, I'll address each question step-by-step. If you've uploaded an image of the graph, I can analyze it directly for precise calculations. Since I don't have the graph yet, I'll proceed based on typical system-solving procedures. Uploading the graph would ensure more accuracy. Here's how we approach it:

---

Part a: Estimating Coordinates

To estimate the intersection point of two lines:

1. Observe the graph to find where the lines cross.
2. Approximate the x and y values of the intersection point based on the scale of the graph.

If you upload the graph, I can provide a direct estimate.

---

Part b: Selecting an Equation

Each line on the graph has a linear equation in the form $y = mx + b$, where:

• $m$ is the slope.
• $b$ is the y-intercept.

Determine the slope and y-intercept from the graph for one line to identify its equation.

---

Part c: Selecting the Other Equation

Repeat the same process for the second line to derive its equation.

---

Part d: Solving the System

To find the exact intersection point:

1. Use substitution or elimination on the two equations obtained in parts b and c.
2. Verify the solution by plugging it back into both equations to confirm accuracy.

---

Questions for Further Insight:

1. Would you like to upload the image for direct analysis of the graph?
2. Should I provide a detailed explanation on how to calculate slope and intercept from a graph?
3. Would you like a refresher on substitution or elimination methods for solving systems of equations?
4. Are you interested in learning how to confirm graphically and algebraically that your solution is accurate?
5. Would a step-by-step worked example of a similar system of equations be helpful?

---

Tip: When estimating coordinates from a graph, zoom in or use a ruler to achieve higher accuracy, especially if the graph isn't labeled clearly.