A2.A-REI.D.11

Explain why the x-coordinates of the points where the graphs of the equations y=f(x) and y=g(x) intersect are the solutions of the equation f(x) =g(x); find the solutions approximately using technology to graph the functions, tables of values, or successive approximations. Include problem solving opportunities utilizing real-world context. Extend from linear, quadratic, and exponential with integer exponents to cases where f(x) and/or g(x) are polynomial, rational, exponential with real exponent, and logarithmic functions.