Substitute x = 4 into the equation y = 3x, or locate the answer on the graph: y = 3x = 3(4) = 12.
The spring stretches 12 inches with a 4-kilogram weight attached to it.
Answer:
x = 4 into the equation y = 3x, or locate the answer on the graph: y = 3x = 3(4) = 12.
Step-by-step explanation: so its 12
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