Final answer:
The coordinates of point BBB on line AC are (-0.5, 4.75).
Step-by-step explanation:
To find the coordinates of point BBB on line AC such that the ratio of AB to AC is 1:3, we can use the section formula.
Let's assume the coordinates of point BBB are (x, y).
The formula states that x-coordinate of point BBB is given by (1/4)(4) + (3/4)(-2) = -0.5.
The y-coordinate of point BBB is given by (1/4)(7) + (3/4)(4) = 4.75.
Therefore, the coordinates of point BBB on line AC are (-0.5, 4.75).