It's so easy just keep on reading it
Answer:
The intersecting x- and y-axes divide the coordinate plane into four sections. These four sections are called quadrants. Quadrants are named using the Roman numerals I, II, III, and IV beginning with the top right quadrant and moving counter clockwise.
Step-by-step explanation:
A.3
the coefficient is the number that is multiplied by the variable
y=3x=-10
8+6=14, 14+6=20 so Jamal must be 3 , cause both ages are added together to make 20 then whatever is left is Jamal's age !!