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If you are asked about.... Arc Length, what formula would you use? |
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s = θr where s is arc length θ is the angle in RADIANS r is the radius |
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| If you are asked about the "nature" of the roots of a quadratic equation, you would use ... |
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the discriminant b2-4ac the a, b and c come from the standard form for a quadratic ax2 + bx + c = 0 |
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| The slopes of parallel lines are... |
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| The slopes of perpendicular lines are... |
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negative reciprocals. (they would multiply to be -1) For example: ½ and -2 |
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| How many radians are in 360 degrees? |
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| 2 π (2 pi) radians or 6.28 radians |
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What do you write when you see the words... inverse variation? |
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Here is the general form of a sine equation y = a sin bx What is the amplitude? What is the frequency? What is the period? |
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y = a sin bx amplitude = a frequence = b period = [image] |
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What is the first thing you do to solve an absolute value equation, such as [image] |
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Write two equations (2 bars, 2 equations) [image] |
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How do you find the x - coordinate of the vertex of a parabola? This is also known as the equation of the line of symmetry? |
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How do you find the sum of the roots of a quadratic equation? ax2+bx+c=0 |
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the sum of the roots is [image] |
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How do you find the product of the roots of a quadratic equation? ax2+bx+c=0 |
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The product of the roots is
[image] |
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