Determine if each function is linear or nonlinear.
a= linear b=non-linear

3x+y=12 a or b
y= \frac{6}{y} -2 a or b
y= \frac{x}{2} -3 a or b
y=3 x^{3} +5 a or b
y=x a or b

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)

The graph shows how many words per minute two students read. drag to the table the unit rate that matches each graph.