Tính giá trị biểu thức đại số chứa giá trị hàm số

A coordinate plane. The x- and y-axes both scale by one. There is a graphed function, y equals f of x, which is made up of line segments. A line segment connects negative ten, negative two to negative nine, negative three. A line segment connects negative nine, negative three to negative eight, negative five. A line segment connects negative eight, negative five to negative seven, negative five. A line segment connects negative seven, negative five to negative six, negative three. A line segment connects negative six, negative three to negative three, negative three. A line segment connects negative three, negative three to negative two, negative four. A line segment connects negative two, negative four to negative one, negative four. A line segment connects negative one, negative four to one, zero. A line segment connects one, zero to three, negative four. A line segment connects three, negative four to four, negative four. A line segment connects four, negative four to five, negative two. A line segment connects five, negative two to seven, negative four. A line segment connects seven, negative four to eight, negative four. A line segment connects eight, negative four to nine, negative five. A line segment connects nine, negative five to ten, negative five. There is another graphed function, y equals g of x, which is also made up line segments. A line segment connects negative ten, five to negative nine, five. A line segment connects negative nine, five to negative eight, four. A line segment connects negative eight, four to negative seven six. A line segment connects negative seven, six to negative six, seven. A line segment connects negative six, seven to negative two, seven. A line segment connects negative two, seven to negative one, six. A line segment connects negative one, six to zero, six. A line segment connects zero, six to one, seven. A line segment connects one, seven to four, seven. A line segment connects four, seven to five, eight. A line segment connects five, eight to six, six. A line segment connects six, six to seven, six. A line segment connects seven, six to nine, four. A line segment connects nine, four to ten, four.