Select the format which represents proportional relationship. a.) ax + by = c b.) y = mx c.) y = mx + b give me the write answer im in the middle of a test and i babe all as in math and i dont want to get dropped to a b so this one is worth 25 points.

You are responsible for designing a new city. you are inspired by pierre charles l'enfant, who laid out the streets of our nation's capital. numbered streets run north and south, and lettered streets run east and west. avenues are named after states, and they intersect the streets on a diagonal. the streets are parallel and the intersections form similar triangles. 18th st. is 454 meters long and the intersection of 18th and k st. is 207 meters from connecticut ave. if 19th st. and k st. is 385 meters from connecticut ave., what is the length of 19th st.?

Will give brainliest if you answer question correct

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?