


When is cos (x) = 0? <em>at 90° (aka π/2)</em>
Answer: 
The answer to this question whould be that the area is 20
Answer:
Slope = 2
Step-by-step explanation:
Slope = 20/10 = 2
You're trying to find constants

such that

. Equivalently, you're looking for the least-square solution to the following matrix equation.

To solve

, multiply both sides by the transpose of

, which introduces an invertible square matrix on the LHS.

Computing this, you'd find that

which means the first choice is correct.