Help it’s urgent no trolls !!

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

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?