How do you write the direct linear variation equation if y varies directly with x and y = 4 when x = 12? Algebra Linear Equations Scale and Indirect Measurement Applications 1 Answer Nghi N. · Stefan V. Apr 14, 2015 #y = x/3# Explanation: #y = x/3# When #x = 12#, you get #y = 12/3 = 4 -># Correct. Answer link Related questions How are scales and ratios related? How can you use proportions and similar triangles to indirectly measure large objects, such as... How do you use similar triangles to set up proportions? How far apart would two cities be on a map that has a 1 inch : 20 mile scale and they are 1,214... How tall is the dog if a man 6 feet tall is standing next to a dog and the man’s shadow is 9... How wide is the actual house if a model house is 12 inches wide and it was built with a ratio of... How do you set up a proportion when you are given a scale? A flagpole casts a shadow of 25 ft. Nearby, a 6-ft tree casts a shadow of 3-ft. What is the... Question #85352 Question #ce15f See all questions in Scale and Indirect Measurement Applications Impact of this question 2752 views around the world You can reuse this answer Creative Commons License