Can you help me i got two wrong if I get one wrong I will have a falling grade

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

How do you find the area of a triangle

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression