Please provide solutions so I can explain it better to my child. Thank you

2. Equations of lines, function notation, graphing, difference quotients. (a) Find the equation of the line passing through the points ( 2, f (=2)) and (4, f (4)) if f(z) = 22. Sketch a graph illustrating the function f(z) = z2 and the secant line you found. (b) Find the equation of the line passing through the points ( 2, f (2)) and ( =2 & h, f(=2+ h)) if f(z) = 2. What does the A represent? Confirm your solution to part (a) by selecting an appropriate value for h. (c) Sketch a graph illustrating the function f(z) = 22 and two secant lines passing through the point (a, f(a)) if a = 2. For one secant line, let h > 0, for the other secant line, let A