Graph each function. Identify the domain and range. ? 1.? ? SOLUTION:?? ? The function is defined for all real values of x, so the domain is all real numbers. ? D = {all real numbers} ? The y-coordinates of points on the graph are real numbers less than or equal to 4, so the range is . ? ANSWER:?? D = {all real numbers}; ? 2.? ? SOLUTION:?? ? The function is defined for all real values of x, so the domain is all real numbers. ? D = {all real numbers} ? The y-coordinates of points on the graph are real numbers between 8 and ?2 and less than or equal to ?8, so the range is . ANSWER:?? D = {all real numbers}; ? Write the piecewise-defined function shown in each graph. ? 3.? ? SOLUTION:??