Grade 8 Mathematics 1. Identify the constants in each of these expressions: 3x² + 5+ 6x - 7y b) a) 56xy + 82y2 - 13x - 15 2. Identify the variables in each of these expressions: 5x²y3 + 6z - 9p a) b) 5x5 + 8x4 + 3x3 - 7x2 + 8 3. Given the following expressions: a) 6x2y - 7xy3 + xy - 9 b) 11mn +12m?n? - 15m3 + 3n3 + 12 c) 11abs -- 16a²b + 4a²b For each of the given expressions answer the following questions: 1) How many terms are in the expression? Give the coefficient of: a) 33 b) m c) 22 Give the constant for each expression. iv) What is the degree of each expression? v) Find the value of each expression if a) x= 3, y = -3 b) m=2, n= -1 c) a= -2, b= 2​