Final answer:
The subject of this question is Linear Algebra. Linear algebra deals with the study of linear equations and their solutions. The correct answer is D. A and B.
Step-by-step explanation:
The subject of this question is Linear Algebra. Linear algebra deals with the study of linear equations and their solutions. In this case, the question asks which of the given equations are linear. A linear equation is an equation that describes a straight line when graphed.
The given equations are:
- A. y = -3x
- B. y = 0.2 + 0.74x
- C. y = -9.4 - 2x
- D. A and B
To determine if an equation is linear, we look for a constant rate of change in the equation. Equations A, B, and C are all linear because they only involve the variables x and y with coefficients that are constant.
Therefore, the correct answer is D. A and B as both equations A and B are linear.