Find the value of x and y if:
(b) `(1,2y-3)=(1,7)`

Answer

To solve the problem, we need to find the values of x and y from the given coordinates. The coordinates provided are (1, 2y - 3) and (1, 7).

### Step-by-Step Solution:

1. **Identify the Coordinates:**
The coordinates are given as (1, 2y - 3) and (1, 7). In coordinate form, the first value represents x and the second value represents y.

2. **Equate the x-coordinates:**
Since both coordinates have the same x-value, we can write:
\[ 1 = 1 \]
This equation is always true, and it tells us that x does not need to be solved for this problem.

3. **Equate the y-coordinates:**
Now, we equate the y-values from both coordinates:
\[ 2y - 3 = 7 \]

4. **Solve for y:**
To find y, we will isolate it on one side of the equation:
- First, add 3 to both sides:
\[ 2y - 3 + 3 = 7 + 3 \]
Simplifying this gives:
\[ 2y = 10 \]
- Now, divide both sides by 2:
\[ y = \frac{10}{2} \]
Simplifying this gives:
\[ y = 5 \]

5. **Conclusion:**
Since there is no x-value to solve for, we conclude that:
\[ x \text{ is not defined (or any value)}, \quad y = 5 \]

### Final Answer:
- The value of y is 5, and x is not defined in this context.