Based on the family the graph below belongs to, which equation could represent the graph?

Trigonometry hellllllpppppppp asap

△cde maps to △stu with the transformations (x, y) arrowright (x − 2, y − 2) arrowright (3x, 3y) arrowright (x, −y). if cd = a + 1, de = 2a − 1, st = 2b + 3 and tu = b + 6, find the values of a and b. the value of a is and the value of b is .

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form