What would be the equation for this and the answer

Two different linear functions are shown below with two points given from each function. use slope-intercept form or point-slope form to find the equation of each. linear function a points: (–5, –2), (–5, 7) linear function b points: (7, –5), (–2, –5) function a has: the equation of line a is: function b has: the equation of line b is:

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

Find the cosine function that is represented in the graph.