PLS I NEED HELP I HAVE $^ QUESTIONS ON THIS TEST AND IF I DONT PAST I GO TO SUMMER SCHOOL :(

△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 .

Do,h = (7, 9) (14, 18) the scale factor is

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.