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# Algebra2 final

### final study guide

Question | Answer |
---|---|

Simplify 7-3(2-5) *squared* | -20 |

simplify 4+6/2*5-10 | 9 |

simplify 4+8/2*3-6 | 10 |

Evaluate x3-2x2+3x when x=-3 | -54 |

Evaluate xy-2y/5y when x=-2 y=1 | -4/5 |

simplify 3(x-2)-(5x-10) | -2x+4 |

Simplify 5-2[x-3(1-x)] | -8x+11 |

Simplify 2/3x-1/5= 16/6x+1 (rid of denominators) | x= -3/5 |

Solve: 7x-3(x-2)=2(2x-3) | -6 or 6 |

solve: 2x+5=3(x+5)-x | no solution |

Solve: x-3(x+2)=2x+1 | -7/4 |

solve for k: I=1/2Pt*2k | k= 2I/Pt*2 |

solve: /2x-1/+x=3 | 4/3 or -2 |

solve: 7-/3x-2/>4 | -1/2 |

what is the formula for slope | y2-y1/x2-x1 |

L1 and L2 are perpendicular lines. if the slop of L1 is 1/2 then what is the slope of L2 | m=-2 |

what is the slope of a horizontal line | m=0 |

what is the slope of a vertical line | undefined |

Mr. Smith bought a new car in 2005 for $35,000. in 2008 his car is worth only $27,000. What is the rate of change of car value | $2,666 2/3/ year |

find the x and y intercepts: 5x+2y=20 | (4,0)(0,10) |

write and equation in slope intercept form of the line that passes through (4,-5) and has a slope of -3 | y=-3x+7 |

when solving a system of two linear equations by graphing, how many solutions are there if the two lines are parallel? the same | none, infinitely, one |

solve this system (substitution) x+2y=8 -x+3y=2 | (4,2) |

solve by elimination: x+3y=-1 2x+5y-4 | (17,-6) |

how many solutions does this system have: -6+2y=2 12x-4y=-4 | infinite |

Find the vertex of the graph of the equation: y=x*2-4x+5 | (2-1) |

Find the vertex of the graph of the equations: y=-2(x-3)*2+2, y=3(x+5)*2, y=-(x+2)*2-1 | (3,2), (-5,0), (-2,-1) |

Find the vertex of the graph of the equations: y=3(x-2)(x-4), y=-2(x+1)(x-3), y=x(x+6) | (3,-3), (1,8), (-3,-9) |

Created by:
chewil08.14