Your suppose to take the order pair you got and subsitute it in both of the equations. The chart has the y and x on one side and a number on the other. Treat it like an algebraic equation and try to see if when you subsitute the x and y with the order pair given you get the number on the other side of the equation. For example x + 3y = 6 once subsituted with the order pair looks like 3 + 3(1) = 6. From there you do one step at time until finally you get 6 = 6 which tells you that (3,1) is a solution for this equation. Now you have to find out if the ordered pair works for both of the equations not just one since it said "given system". Hope I explained it clearly enough :)
6 ^ 2- 13(6) +42/ -5(6)^2+37(6)-42
36- 78+ 42/ -30^2+222-42
0/ 900+222-42
0/1,080
anything divided by 0 is 0
Answer:
fenced off land
agriculture
introduction of sheep and cattle
excessive hunting
Explanation:
These are all factors that the pioneers introduced to the prairies and which forever changed the natural environment of the region. The pioneers brought with them sheep and cattle, as they considered these necessities to sustain their way of life. However, these were new introductions to the area and required the land to be fenced in order to keep them from leaving. To sustain themselves, they also relied on agriculture and hunting. Agriculture changed the ecosystem of the area, as well as its appearance. Hunting was eventually done to an excessive degree, leading to the decline of many species, such as the American bison.
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Hope it helps :)
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