Which table shows a linear function

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Which representation has a constant of variation of -2.5

What is the difference between the equations of a vertical and a horizontal line?

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°