Final answer:
The linear equations in the given options are y = -3x and y = 0.2 + 0.74x.
Step-by-step explanation:
The correct answer is D) A and B. Both equations y = -3x and y = 0.2 + 0.74x are linear equations because they are of the form y = mx + b, where m and b are constants. The other equations, y = -9.4 - 2x and y = -5x^2 + 3x - 1, are not linear equations because they contain a variable raised to a power greater than 1.