CPM Homework Help : A2C Problem 10-47

Rearrange each equation into a more useful form for graphing. State the locator point and draw the graph. Homework Help ✎
1. y = 2x² + 8x + 5
2. x² + y² − 2x − 6y = 0

Hint (a):

Factor and complete the square.

More Help (a):

y = 2(x² + 4x) + 5

y = 2(x² + 4x + 4) − 2(4) + 5

Answer (a):

y = 2(x + 2)² − 3

Locator point: (−2, −3)

Hint (b):

Complete the square for both x and y.

Answer (b):

(x − 1)² + (y − 3)² = 10

Locator point: (1, 3)