Is there sufficient evidence to conclude that is a linear correlation between altitude and outside air temperature?

Listed below are altitudes (thousands of feet) and outside air temperatures(degrees Fahrenheit) recorded by the author during Delta Flight . is there sufficient evidence to conclude that is a linear correlation between altitude and outside air temperature? test the significance if the correlation coefficient at a=0.05

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Altitude = 3 10 14 22 28 31 33

Temperature = 57 37 24 -5 -30 -41 -54

is r is significant, find the equation of the regression line and find the best predicted temperature at x=6.327 thousand fee