I need some help on these multiple choice slope/ linear graphs equations.

Explain how you got your answer. Please and thank you.

△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 .

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42