I need help on this equation

What is the point-slope form of theequation for the line with a slope of-2 that passes through (1, 4)? a y + 1 = -2(x + 4)b y-1=-2(x-4)c y + 4 = -2(x + 1)d y - 4 = -2(x - 1)

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Ill mark the brainliest if you me with the these three questions 7,8,9