How do you find the zero (x-intercept) when given an equation?

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Which ordered pair identifies a point in quadrant iv? a) (2, 5) b) (0, 1) c) (-1, -1) d) (12, -5) which quadrant is (-4,-6) in? a) i. b) ii. c) iii. d) iv.