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Study
EOC Review Week 2
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Name 3 methods that we can use to solve system of equations
By Graphing, Substitution, Elimination
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y = 3x +2 y = 3x - 3 These lines are...
Parallel
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Find the common difference: -34, -29, -24, -19, ...
d = 5
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What is the definition of function?
Every input has only ONE output
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What slope is perpendicular to: m = 3
-1/3
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If a system of equations has no solution, what does the graph look like?
parallel lines
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Is it a function? (2, -2) (5, 9) (5, -7) (1, 4)
No
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Solve for x and y. y = 2/3x - 2 & y = -x + 3
(3, 0)
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System of equations with the intersecting line have _____________ solutions.
one
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A line is perpendicular to y = 2x - 7. What is the slope of this line?
-1/2
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Is the sequence arithmetic: -3, 3, -3, 3, ...
no
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When graphing inequalities, shade _______________ if y > or ≥ the expression, shade ________________ if y < or ≤ the expression.
above ; below
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What variable can be used to represent correlation coefficient?
r
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Write out an equation that is PARALLEL to the following line: y = 2/9x - 7
y=2/9x+7 (same slope)
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Graphing Inequalities: If the inequality is < or >, use a __________ line. If the inequality is ≤ or ≥, use a _____line
dotted; solid
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Arithmetic Sequence – sequence of numbers that increases or decreases by a constant rate, called the ____________
Common difference
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Write the recursive formula for 4, 8, 12...
an=an-1+4
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What slope is parallel to: m = 4
4
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Systems of equation with the same line have _____________ solutions.
infinite
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Score on science exam and number of words written on the essay question. r=.28. Explain the strength of correlation
week positive
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Systems of equations that are parallel lines have _______ solutions
no/zero
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Parallel lines - ______________ intersect, have _______________ slope
never; same
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Perpendicular lines – Intersect at _____________________, have ______________________________ slopes
right angle; opposite reciprocal
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Given the sequence: 25, 21, 17, 13,... Write the explicit equation that models the sequence. (Hint: Simplify your equation.)
an = -4n + 29
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