Draw a graph of direct proportion, expressed by the formula: y=3x

Answer question above and explain each step : )

What is the value of x in the diagram below?

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students