Math question Which pair of points has a slope of 4?

Question 4 options:

(0, –3), (1, 1)

(1, 4), (–1, 4)

(0, 4), (4, 0)

(3, 0), (–1, –1)

Isabelle is mixing red and blue paint to make purple paint she adds 3/10 of a fluid ounce of red to 12/25 of a fluid ounce of blue to make 1 1/30 fluid ounces of purple how many fluid ounces of red paint ounces of red paint will she need to make 3 fluid ounces of purple paint