Hosted by Mrs. Carrigan 100 200 400 300 400 Systems w/ 2 var. Systems w/ 3 var. and Inequalites Non-linear systems Misc. Ch.7 300 200 400 200 100 500.

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Presentation transcript:

Hosted by Mrs. Carrigan

Systems w/ 2 var. Systems w/ 3 var. and Inequalites Non-linear systems Misc. Ch

Row 1, Col 1 How many solutions does the system have? y=2x + 5 y = 2x - 7 What is none?

1,2 Solve for x. x=2y z=7y 3x + 5y – z = 13 What is 6.5?

1,3 Solve for y. y² + x² = 34 y² - x² = 16 What is 5 and -5?

1,4 If x varies inversely as y, and y=6 when x=12, what is the value of x when y = 9? What is 8?

2,1 Solve the system: 2x + 3y = 28 3x – y = 9 What is (5,6)?

2,2 Solve for y. x + y + z = 15 x – y – z = -5 -x – y + z = -1 What is 3?

2,3 Is (-3,4) a solution of the system? x² + y² = 25 y = -2x - 2 What is yes?

2,4 Find the vertices of xy = 25 What are (5,5) and (-5, -5)?

3,1 Charles has 125 coins, all dimes and quarters. If he added 10 quarters and 12 dimes, the value of the coins would be $ Write a system of equations to represent this situation. d + q = q + 10d = 2075

3,2 Solve for z. x + 2y – 3z = 3 3x – 4y + 6z = 4 y – 2z = 2 What is -3?

3,3 Find the points of intersection of: y = x² x² - y² = -2 Ask Mrs. Carrigan!

3,4 Complete the table to show that y varies inversely as x. What are (-4,-12), (6,8), (-2,-24), (1,48)? X y168

4,1 The sum of Bill’s age and his father’s age is 64. In 5 years, Bill’s father’s age will be 10 less than 3 times Bill’s age then. How old is each person now? What are 16 and 48?

4,2 Graph the solution set. y ≤ x + 3 y > (x – 1)² - 5 Put solution on board.

4,3 Solve. x² + y² = 36 2x² - y² = 12 Ask Mrs. Carrigan!

4,4 Graph xy = 10 Put answer on board.

5,1 Pop and Zeb have gone fishing in their small motorboat. They traveled 19.5 miles downstream in 3 hours. After 3 hours on the way back upstream, they have only gone 8.7 miles. Find the speed of the current. What is 1.8 mph?

5,2 Find the vertices of the region defined by: x ≥ 0 y ≥ 2x – 2.5 y ≤ 0.5x + 2 What are (0, -2.5), (3, 3.5), (0, 2)?

5,3 Solve. 2/(x+1) + 5/(y-1) = 12 5/(x+1) + 2/(y-1) = 9 What is (0, 3/2)

5,4 The sum of the squares of two numbers is 88. The difference of the squares of the two numbers is 10. What might the two numbers be? Ask Mrs. Carrigan