Which t-chart matches the equation y = x^2 - 2? x y
-2 2
-1 1
0 -2
1 1
2 2

x y
-2 2
-1 -1
0 -2
1 -1
2 2

x y
-2 -6
-1 -3
0 -2
1 -1
2 2

x y
-2 2
-1 -1
0 -2
1 -3
2 6

For a school science project, john noted the temperature at the same time every day for one week. the high temperature for the week was 27°f, and the low temperature for the week was −3°f. what is the difference between the high and low temperatures john recorded?