section+9.5+systems+of+equations

2. {(x^2/9) + (y^2/4) = 1 {y = x + 3

(x^2/9) + ((x+3)^2)/4 = 1 (x^2)/9 + (x^2 +6x+9)/4 = 1 4x^2 + 9x^2 + 54x + 81 = 36 13x^2 + 54x +45 = 0 (13x+15) (x+3)

x = -15/13 y = -15/13 + 3 y = 24/13 (-15/3, 24/13)

x = -3 y = -3 + 3 y = 0 (-3, 0)

Worked by Gina Marucci correct Checked by Erica Molson

worked by Hadi Abbas

3. checked by emily othold

6. x^2+64y^2=64 -x^2-y^2=-64 64y^2 =0 y^2=0 y=0 x^2=64 x=+/- 8 (8,0) (-8,0) Worked by Eva Hogan checked by Cymphoni

7. (√2, √2) (-√2, -√2) Worked by Elizabeth Han corrct! checke by michele centineo

8. t+4 = (v-1)^2 t+1 = -v (-3,2) (-2,-1) Worked by Nolan Blair correct. Checked by Grant Lund

9. neither graph will intercept with each other so the answer is Worked by John Karna
 * the null set**

Worked by Ellie Tendall correct checked by zack barth

12. Checked by Jack Bentele

13. X=-6/5 and X=2 (-6/5,9/5) (2,5) worked by Scott Trostle