College Math CLEP Prep Practice Exam

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What is the inverse of the equation y = -8x + 3?

y = -1/8x + 3
y = 8x - 3
y = -8x – 3
y = 1/8x - 3

The correct answer is: y = 1/8x - 3

The inverse of an equation is found by swapping the x and y variables and solving for y. In this equation, the x and y variables are already swapped, so the inverse is already given. Choices A, B, and C do not correctly represent the inverse as they do not swap the variables and/or do not have the same sign for the x coefficient. Thus, the only correct option is D, where the x and y variables are swapped and the sign of the x coefficient is changed to the reciprocal.