4 . The curvey2 + 8 intersects the x-axis at C. The tangent to the curve at C intersects the y-axis at D. Find the distance CD.​

Item 1 use the polygon tool to draw a rectangle with a length of 4 units and a height of 2 units. one of the sides of the rectangle falls on line ef , and the rectangle has a vertex of e. each segment on the grid represents 1 unit.