Find y round to the nearest ! trigonometry! second time posting this someone

Ascatterplot is produced to compare the size of a school building to the number of students at that school who play an instrument. there are 12 data points, each representing a different school. the points are widely dispersed on the scatterplot without a pattern of grouping. which statement could be true

How do i do this activity, is appreciated

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression