How do I find the indicated value for this problem?

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

The table represents a linear function. what is the slope of the function? –6 –4 4 6

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin