No clue on how to do this

Which math sentence can be used to determine if the triangle is a right triangle?

Solve: 3x+y=6 4x-2y=18 show all work !

M the table below represents a linear function f(x) and the equation represents a function g(x): x f(x)−1 −50 −11 3g(x)g(x) = 2x − 7part a: write a sentence to compare the slope of the two functions and show the steps you used to determine the slope of f(x) and g(x). (6 points)part b: which function has a greater y-intercept? justify your answer. (4 points)