Afigure has a vertex at (-1, -3). if the figure has line symmetry about the x-axis, what are the coordinates of another vertex of the figure?

What is the area of triangle abc if a = 8, b = 11, and c = 15?

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.