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Algebra 2

Algebra 2. Warm-up 20. 1. If a + b = c and d + e = f, which of the following is not true? a + b + f = c + d + e a + b – f = c – d – e a + b + c = d + e + f a + b + d + e = c + f. 2. y is directly proportional to x and x = 25 when y = 10. What is the value of y when x = 7?.

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Algebra 2

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  1. Algebra 2 Warm-up 20

  2. 1. If a + b = c and d + e = f, which of the following is not true? • a + b + f = c + d + e • a + b – f = c – d – e • a + b + c = d + e + f • a + b + d + e = c + f

  3. 2. y is directly proportional to x and x = 25 when y = 10. What is the value of y when x = 7?

  4. 3. A line passes through (-8,1) and (-2,3). Another line passes through (-1,0) and (-5,-3). What is the solution to this system of equations? • (7,6) • (6,5) • (2,5) • (-5,2)

  5. 4. Which of the following does not represent the area of the figure shown below? • ab+ac-cf+ad • a(b+c+d)-cf • a(b+d)+c(a-f) • ab+ac-af+ac a c f b d

  6. 5. What is the area of the shaded region shown below? 8 in A. 25.3 sq. in. B. 26.6 sq. in. C. 53.4 sq. in. D. 29.8 sq. in. 10 in

  7. 6. A line shown below. Which equation best represents a new line where the slope is multiplied by -1 and the y-intercept is increased by 3? • 2x-3y=12 • 2x+3y=-12 • 2x-3y=9 • 2x+3y=-9

  8. 7. If ABCD is reflected across the line y = x to form A’B’C’D’. What are the coordinates of B’? • (-3,2) • (3,-2) • (2,-3) • (-2,3)

  9. F A E B 30° D C 8. Use the figure below to find the length of segment EB.

  10. What is the vertex of the quadratic equation • ? • (-4,0) • (0,8) • (-1,9) • (-2,8)

  11. 10. Which graph represents a line that is perpendicular to the equation ?

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