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Mathematics 7 Online
OpenStudy (anonymous):

Please help me with this! Fan and medal!

OpenStudy (anonymous):

OpenStudy (campbell_st):

is turn on the computer and use graphing software allowed...?

OpenStudy (anonymous):

so from second result y>= -x yes ? how will be the first one ? so in case of first inequality when give to x=0 result y=-2 and so for x=-1 result y=0

OpenStudy (anonymous):

@campbell_st yes i think so, it just wants steps describing how

OpenStudy (campbell_st):

ok... to the 1st line is ok... so use a table of values and substitute them to get the corresponding y values x | 0 | 1 | 2 | ------------------ y| -2 | | | you can get the other 2 values the inequality \[\ge\] means the line is solid... so graph the points and draw the line. for the 2nd line rewrite the line as \[y \ge -x\] repeat the process using a table of values to get the points plot them and draw the solid line then the last step is shading the line... use the point (1, 1) and substitute it into each inequality to see if the inequality is true if it is true the point (1, 1) is in the region to be shaded. hope it makes sense

OpenStudy (campbell_st):

oh, if you test with (1,1) and the inequality is false, shade the opposite side of the line

OpenStudy (anonymous):

do the next two values have to be anything specific?

OpenStudy (campbell_st):

so to get the ordered pairs in the table of values use the line y = 2x - 2 I substituted x = 0 and found y = -2 now you can do the same with x = 1 find the value of y x = 2 find the value of y

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