1.
What is the coefficient of x² in the expression ax + b? 
2.
What is the coefficient of x in the expression ax³ + bx² + d? 
3.
What is the coefficient of y² in the expression 2x²y  10xy² + 5y²? 
4.
What is the coefficient of y² in the expression 3y² + 4x? 
5.
What is the coefficient of y² in the expression 4  xy²? 
 
6.
What is the coefficient of x in the expression 1 + x + xz?
7.
What is the coefficient of x in the expression 2x + xy^2
8.
What is the coefficient of x in the expression 2z 3xz?
9.
What is the coefficient of x in the expression y^2x + y?
10.
What is the coefficient of x in the expression 2 x + y?