brainliest and points !! ANSWER ASAP !!( use new ideas not the ones on the internet pls) Describe a situation that models a linear pattern and then describe a situation that models a nonlinear pattern. State which situation is linear and which is nonlinear.

Answer:Step-by-step explanation:The sum of the ages of a Mother and her son is 78 , three years ago the mother is five times as old as the son, what is their present ages?To solve this , let the age of the mother be x and the age of the son be y , from the first statement :x + y = 78Three years ago , the mother will be x- 3 and the son will be y - 3 , from the second statement:x - 3 = 5 ( y-3)x- 3 = 5y - 15x - 5y = -12The resulting equations are x + y = 78x - 5y = -12This is called a simultaneous linear equation , that means it is a linear equation.The side of a square is xcm , if the difference between the area and the perimeter is 12 , find the legth of its side.Interpretation:The formula for the area of a square is [tex]l^{2}[/tex] and the perimeter is 4l , from the question , we have[tex]x^{2}[/tex] - 4x = 12This is not a linear equation , it is simply a quadratic equation , so the situation is non linear