7x^2+9x+4 monomial binomial or trinomial

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:

I’m really confused and need your assist me with this question i’ve never been taught

Simplify using positive exponents only.