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Which diagram best shows how fraction bars can be used to evaluate 1/2 divided by 1/4?

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work:

Which of these lines passes through the point (1,-1) and has a slope of -3?