How do you find rate of change using a graph?

What is the equation of the graph below? y=sec(x)-4

(08.01)consider the following pair of equations: x + y = −2 y = 2x + 10 if the two equations are graphed, at what point do the lines representing the two equations intersect? (−4, 2) (4, 2) (−2, 4) (2, 4)

Evaluate the expression. (9 + 5)(3 + 2)0