Algebra Midterm Jeopardy Algebra Midterm Jeopardy ch 2
Algebra Midterm Jeopardy
Algebra Midterm Jeopardy ch 2 ch 3/7 ch 6 ch 7 1 1 2 2 3 3 4 4 Final Jeopardy ch 8 1 2 3 4 other 1 2 3 4
Chapter 2 1 point -4(3 x – 8) = 2(4 x + 12)
Chapter 2 • 1 point answer
Chapter 2 2 points Daily Double! Solve for m: 4 mn – 6 = 14
Chapter 2 • 2*2 points answer
Chapter 2 • 3 points
Chapter 2 • 3 points answer
Chapter 2 4 points Which equation is NOT equivalent to: 3 p -2 = 6 p + 4? A. B. C. D. 3 p = 6 p + 6 -3 p – 2 = 4 -6 = 3 p 3 p = 6
Chapter 2 3 p -2 = 6 p + 4 -2 = 3 p + 4 -6 = 3 p -2 = p A. 3 p = 6 p + 6 -3 p = 6 p = -2 B. -3 p – 2 = 4 -3 p = 6 p = -2 4 points answer C. -6 = 3 p -2 = p D. 3 p = 6 p=2
Chapter 3/7 1 point
Chapter 3/7 1 point answer -3 x + 3 > -9 -3 x > -12 x<4 C
Chapter 3/7 2 points •
Chapter 3/7 2 points answer •
Chapter 3/7 3 points
Chapter 3/7 3 points answer •
Chapter 3/7 4 points •
Chapter 3/7 • 4 points answer
Chapter 6 1 point Graph:
Chapter 6 1 point answer (out of the symbol – 2 means down 2) ( (in symbol x – 3 means right 3)
Chapter 6 2 points State the slope and y –intercept of each equation. Would the lines be parallel, perpendicular, or neither? How can you tell?
Chapter 6 2 points answer •
Chapter 6 3 points State the x and y intercepts of the line: 8 x = 12 y – 16
Chapter 6 3 points answer •
Chapter 6 4 points •
Chapter 6 4 points answer •
Chapter 7 1 point How many solutions does the following system of linear equations have? 4 x – 2 y = 16 3 y = 6 x – 24
Chapter 7 1 point answer 4 x – 2 y = 16 -2 y = -4 x + 16 y = 2 x – 8 3 y = 6 x - 24 y = 2 x – 8 The system has infinitely many solutions – the slopes and the y-intercepts are the same, so the lines are coincident (same line!)
Chapter 7 2 points Solve: 24 x + 2 y = 52 6 x – 3 y = -36
Chapter 7 2 points answer 24 x + 2 y = 52 6 x – 3 y = -36 *-4 24 x + 2 y = 52 -24 x + 12 y = 144 14 y = 196 y = 14 24 x + 2(14) = 52 24 x + 28 = 52 24 x = 24 x=1 (1, 14)
Chapter 7 3 points A company sells brass and steel machine parts. One shipment contains 3 brass and 10 steel parts and costs $48. A second shipment contains 7 brass and 4 steel parts and costs $54. Find the cost of each machine part.
Chapter 7 3 points answer 3 B + 10 T = 48 7 B + 4 T = 54 3(6) + 10 T = 48 18 + 10 T = 48 10 T = 30 T=3 *2 *-5 6 B + 20 T = 96 -35 B – 20 T = -270 -29 B = -174 B=6 Brass $6 Steel $3
Chapter 7 4 points Compare the solutions of the following 2 systems of equations:
Chapter 7 4 points answer 10 x – 5 y = 25 x – y = 15 *-5 -5 x + 5 y = -75 5 x = -50 x = -10 x + 5 y = -25 2 x – 2 y = 30 *5 10 x – 10 y = 150 -5 y = 125 y = -25 -10 – y = 15 -y = 25 y = -25 2 x – 2(-25) = 30 2 x +50 = 30 2 x = -20 x = -10 The x and the y values are both the same
Chapter 8 1 point 0 -4 5 x y
Chapter 8 1 point answer •
Chapter 8 2 points 5 6 2 (5 x )(3 y )(3 x )
Chapter 8 2 points answer 5 6 2 (5 x )(3 y )(3 x ) 7 6 45 x y
Chapter 8 3 points 5 3 2 (-4 xy z )
Chapter 8 3 points answer 5 3 2 (-4 xy z ) = 2 10 6 16 x y z
Chapter 8 4 points •
Chapter 8 4 points answer •
Other 1 point
Other 1 point answer The definition of a function is: each input (x) gives exactly one output (y). This is NOT a function because the input of 75 does not give exactly one output (it gives 12. 5 and 13)
Other 2 points State the domain and range of the graph. How would the domain and range change if the graph had arrows on both ends?
Other 2 points answer •
Other 3 points The perimeter of a rectangle is 276 feet. The length of the rectangle is 3 more than twice the width. Find the length and width.
other 3 points answer The perimeter is 276 2 L + 2 W = 276 Length is 3 more than twice width L = 2 W + 3 2(2 W + 3) + 2 W = 276 4 W + 6 + 2 W = 276 6 W + 6 = 276 6 W = 270 W = 45 L = 2(45) + 3 L = 93
Other 4 points State the domain and range:
Other 4 points answer Domain: all real numbers Range: y ≤ 3
Final Jeopardy The length of a rectangle is 5 times the width. The perimeter is 54 inches. Find the length and width.
Final Jeopardy answer 54 = 2(W) + 2(5 W) 54 = 12 W 4. 5 = W L = 4. 5(5) = 22. 5 Length = 22. 5 inches width = 4. 5 inches
- Slides: 52
