Solve the following system of equations: 2x - 3y = -1
y = x - 1

A. (4, 3) B. (-2, -3)
C. (-4, -5) D. (2, 1)

Which best describes the strength of the correlation, and what is true about the causation between the variables? it is a weak negative correlation, and it is not likely causal. it is a weak negative correlation, and it is likely causal. it is a strong negative correlation, and it is not likely causal. it is a strong negative correlation, and it is likely causal.

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)