Final answer:
To solve for x in the equation y = 6x, substitute the value of y and solve for x by dividing both sides by 6. The correct answer is x = 8.
Step-by-step explanation:
To solve for x in the given equation y = 6x, we need to substitute the value of y and solve for x. Since y = 48, we have 48 = 6x. To isolate x, we divide both sides of the equation by 6: 48/6 = x. Simplifying, we get x = 8.
Therefore, the correct answer is a) x = 8.