Let's solve the problem step by step.
1. Addition of Coordinate Pairs:
- We are given the coordinate pairs [tex]\((3, 4)\)[/tex] and [tex]\((7, 8)\)[/tex].
- To add these coordinate pairs, we add their corresponding components:
[tex]\[
(3 + 7, 4 + 8)
\][/tex]
- Performing the addition:
[tex]\[
(10, 12)
\][/tex]
2. Scalar Multiplication of a Coordinate Pair:
- We are given the coordinate pair [tex]\((-2, -5)\)[/tex] and a scalar [tex]\(4\)[/tex].
- To perform scalar multiplication, we multiply each component of the pair by the scalar:
[tex]\[
(-2 \times 4, -5 \times 4)
\][/tex]
- Performing the multiplication:
[tex]\[
(-8, -20)
\][/tex]
3. Third Coordinate Pair:
- We are given another coordinate pair [tex]\((5, 2)\)[/tex], which we will consider as part of the final result.
So, putting it all together, we have:
- The result of adding [tex]\((3, 4)\)[/tex] and [tex]\((7, 8)\)[/tex] is [tex]\((10, 12)\)[/tex].
- The result of the scalar multiplication of [tex]\((-2, -5)\)[/tex] by [tex]\(4\)[/tex] is [tex]\((-8, -20)\)[/tex].
- The given coordinate pair is [tex]\((5, 2)\)[/tex].
Thus, the final results are:
[tex]\[
((10, 12), (-8, -20), (5, 2))
\][/tex]