Round 3,764 to the nearest ten?

100 points, hi, i’m not sure how to get the equation from the graph and table.

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

What is the y-intercept of the line given by the equation