Me with this and show me how you do it

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:

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

Equation for the calculation double 2 and then add 5