Mathematics
14 Online
OpenStudy (anonymous):
Find three solutions of the equation y = 7x – 5. (1 point)
• (3, –26), (–1, –12), (3, 16)
• (–3, –26), (–12, –1), (16, 3)
• (–3, –26), (3, 16), (1, –12)
• (–3, –26), (–1, –12), (3, 16)
plx help as fast u can
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pooja195 (pooja195):
same thing as the last one you just have to plug them in
OpenStudy (anonymous):
7 * -5? is that what i do
pooja195 (pooja195):
\[ -26 = 7(3) – 5\]
\[ -12 = 7(-1) – 5\]
\[ 16 = 7(3) – 5\]
OpenStudy (anonymous):
so B
pooja195 (pooja195):
no its not B -12 * 7 -5 is not -1
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OpenStudy (anonymous):
C sorry bit this is all confusing
pooja195 (pooja195):
no now you're just guessing :O
ok we need to plug in each number like i have done above we know its not A or B did u do the work for C?
OpenStudy (anonymous):
no
pooja195 (pooja195):
\[ -26 = 7(-3) – 5\] does this equal -26
OpenStudy (anonymous):
no
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pooja195 (pooja195):
ok so that one is good :) because 7*-3=-21 - 5 = -26 so its okay
\[ 16 = 7(3) – 5\]
pooja195 (pooja195):
7 x 3 = ?
OpenStudy (anonymous):
21
pooja195 (pooja195):
good now -5 ?
OpenStudy (anonymous):
16
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OpenStudy (anonymous):
so its D
pooja195 (pooja195):
Yep! Yay!!! you got it!
OpenStudy (anonymous):
Thanks!!!!!
pooja195 (pooja195):
you're welcome :)