A1 Test 3 study guide with answers

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A1 Test 3 study guide with answers

  1. 1. Algebra 2<br />Test 3 Study Guide<br />The solution to a system of equations is a point.<br />The solution to a system of inequalities is a shaded area.<br />Parallel lines: Never intersect, same slope, no solution<br />Coinciding lines: Same line, infinitely many solutions<br />Is 3,2 a solution to the system?<br />1.y=-2x+8 2.-y=x-5<br />-4x+8y=3 3y=2x<br />NOYES<br />3.y>-x+14.y>-x+1<br />2y≥2x-22y>2x-2<br />YESNO<br />Solve the system of equations by graphing.<br />5.2x+y=136.y=-2x-2<br />y=52x-1-2y=-x+16<br />112, 312 (2,7)<br />7.2x+y=-118.y=5x<br />-3y=6x+33y=x+4<br />infinitely many solutions12,212<br />Solve the system of equations by substitution or elimination.<br />9.2x-4y=1310.3x+4y=-4<br />4x-5y=8x+2y=2<br />-112, -6-8, 5<br />11.x-2y=312.6x-10y=12<br />2x-4y=7-15x+25y=-30<br />no solutioninfinitely many solutions<br />13.-5x+7y=1114.-2x+3y=20<br />-5x+3y=194x+4y=-15<br />-5, -2-254,52<br />15.x-y=316.x-4y=-2<br />-2x+2y=-6-3x+8y=-1<br />infinitely many solutions5,74<br />Solve the system of inequalities by graphing.<br />17.x-y≥318.y>2x+2<br />y≤x-52x+y<4<br />19.x+y≤-320.y<-2x+10<br />2x-3y>-6x+3y>-3<br />

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