Find the value of the discrimination of the equation 0= -2x^=10x +2

Aline has a slope of and a y-intercept of –2. what is the x-intercept of the line?

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?