Geometry help !! Plz help

What is the point-slope equation of a line with slope -5 that contains the point (6,3)

Choose the equation below that represents the line that passes through the point (2, 4) and has a slope of 3. a) y − 4 = 3(x − 2) b) y − 2 = 3(x − 4) c) y + 4 = 3(x + 2) d) y + 2 = 3(x + 4)

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)