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PARRC Test Practice Question 3 for Algebra 1
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Added Sep 18, 2015
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question 3 reads which graph best represents the solution to this system of inequalities pause x + y is less than equal to 6 x + y is less than or equal to 6 we also have x + y to y is less than or equal to 8 choose a couple different ways but are the easier way to do this if we have easier numbers deal with how to do with this stuff on the x intercept the intercepts going to set and the wine sale now that accident stuff is what a line across the x-axis right answer since I was at the Y you go to zero for the y intercept the wine said is what laws caused the y-axis and here reset the X20 some deal with my first equation here well I + x + y is less than equal to 6 04 why and it's equal 6 2x would have to equal 6 is what that means this line crosses the X XNXX that over six of zero well that's about right here so you can eliminate answer a route the bat you can eliminate answer me back cuz there's nothing here there's nothing here here ever won at 60 and he would have a line at 60 so let's continue on the why I asked either sat on this problem see if that helps any hear the line crosses the Y well if we plugged in ex40 facts that why is case also has equal 6 she's so it has to cross the y axis sex so we're still left either C or D let's continue on with this next equation and see if we can make any sense of it are accidents is we set the walk Warren equals 0 well input 0 4 watt 2 x 0 0 Salon is it cross at 8 the x intercept of this Longwood cross at over 8 lacrosse date Norfolk Crossing at 8 on this one so at this point D would have to be our answer well let's go ahead and check a couple more things off of measure r y intercept we would input 0 4 x infection 0 to X so don't have to cross it for this line here across that for across the state this one cross at 6 and cross at 6 it says both of these are less than a lot so it's shaded below Saudi is obvious answer
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