TEKS.MATH.9-12.II.C

Determine the value of the discriminant and name the nature of the solution for the following:
x² + 2x - 63
Remember:  b² - 4ac

• 256 - 2 reals - Rational
• √(-256 - 2 imaginary solutions
• √(137) - 2 reals - Irrational
• 123 - 2 reals - Rational

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TEKS.MATH.9-12.II.C

-2x + y = 1
-4x + y =- 1
answers in (x,y)

• (1,3)
• no solution
• (-1,3)
• (3,1)

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TEKS.MATH.9-12.II.C

Find the inverse of
f(x) = 1/4x - 7

• f^-1(x) = 4x + 7
• f^-1(x) = -4x + 28
• f^-1(x) = -4x - 7
• f^-1(x) = 4x + 28

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TEKS.MATH.9-12.II.C

Solve by factoring:
 x² - 9x + 20 = 0

• x = -4 and x = -5
• x = 20 and x = -9
• x = 4 and x = 5
• x = -4 and x = 5

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TEKS.MATH.9-12.II.C

s + 9 ≥ -25

• s ≥ -18
• s ≥ -34
• s ≤ 18
• s ≥ 34

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TEKS.MATH.9-12.II.C

Write equation of the line containing (0,5) and (2,-1)

• y = -2x + 5
• y = -3x +5
• y = 2x + 5
• y = 3x + 5

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TEKS.MATH.9-12.II.C

Solve the system of linear equations
-2x - 10y = 22
2x + 5y = -12

• (-2, -1)
• (-4, -2)
• (4, -2)
• (-1, -2)

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TEKS.MATH.9-12.II.C

How many solutions does this system of equations have?

• One Solution
• No solution
• Infinitely Many Solutions
• Two Solutions

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TEKS.MATH.9-12.II.C

54x + 64 ≥ 49x + 59

• x≥−1
• x≤-1
• x>9
• x<-3

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TEKS.MATH.9-12.II.C

Is (1,10) a solution to

y=7x+5

y=x+9

• yes

• no

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TEKS.MATH.9-12.II.C