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OpenStudy (anonymous):
Is (8, -1) a solution of the system, 2x + 3y = 13 and x - y = 9? (Points : 1) yes no
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OpenStudy (kamibug):
Yes.
OpenStudy (kamibug):
Do you have a graphing program, such as Geogebra? If not, I suggest you download it for free. It is helpful for anything that has to do with geometry, graphing, equations of lines, points, or shapes. For example, for this question, all I had to do was insert the equations you've provided and it shows me where the intersection is. =)
OpenStudy (anonymous):
ok i have the t1-84 plus its a smart calculator
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