The parabola y= ax^2 +k has a vertex (0,-5) and passes through the point (4,3). find its equation.

35-60 students are taking math.

dilation scale factor 2: starting with δabc, draw the dilation image of the triangle with a center at the origin and a scale factor of two. notice that every coordinate of the original triangle has been multiplied by the scale factor (x2). dilation with scale factor 2, multiply by 2.