thatgirl666
5 Graphing Systems of Inequalities questions??? HELP please!!!
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ZeHanz
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What is your question?
ZeHanz
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Name the system you have to graph...
thatgirl666
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The graph below represents which system of inequalities?
thatgirl666
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y <= -2x + 3
y <= x + 3
y>= -2x + 3
y >= x + 3
y <= -3x + 2
y <= -x + 2
y > -2x + 3
y > x + 3
thatgirl666
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Thats question 1
ZeHanz
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First, you need to find the equations of the straight lines, in the form y=ax+b.
What is the equation of the line through (0,2) and (2, 0)?
thatgirl666
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Uhhhhh y=2x+0?
thatgirl666
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@ZeHanz
ZeHanz
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y=ax+b. b is the y-coordinate of the intersection with the y-axis: b = 2.
a is the slope. Slope is -1, because, if you're on the line, and you do one step to the right, you go 1 down.
So it is y = -x+2.
If you look at the options, there is already only one left...
thatgirl666
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The third option?
thatgirl666
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i kinda understand how to do it now @ZeHanz