Aclass measured the radius and circumference of various circular objects. the results are plotted on the graph. 7,44 6,38 4,25 3,18. a. does there appear to be a proportional relationship between the radius and circumference of a circle? explain or show your reasoning. b. why might the measured radii and circumferences not be exactly proportional?

Which of these statements is correct? the system of linear equations 6x - 5y = 8 and 12x - 10y = 16 has no solution. the system of linear equations 7x + 2y = 6 and 14x + 4y = 16 has an infinite number of solutions. the system of linear equations 8x - 3y = 10 and 16x - 6y = 22 has no solution. the system of linear equations 9x + 6y = 14 and 18x + 12y = 26 has an infinite number of solutions.