Question

Help Please: What is the equation of the line described below written in slope-intercept form?

1)the line passing through point (4, -1) and perpendicular to the line whose equation is 2x - y - 7 = 0
2) the line passing through point (-1, 5) and parallel to the line whose equation is x + y = 10
3) the line passing through point (4, -1) and perpendicular to the line whose equation is 2x - y - 7 = 0