Do the values in the table represent a proportional relationship? x 1 2 3 4
y 2.5 5 7.5 10
All of the y-values are or are not a constant multiple of the corresponding x-values, so the relationship is or isn't proportional?

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?

Which statements about the system are true? check all that apply. y =1/3 x – 4 3y – x = –7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same y–intercept. the equations represent the same line. the lines intersect.