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Mathematics 16 Online
OpenStudy (madmerc):

Which equation does the graph of the systems of equation solve? (posting graph)

OpenStudy (madmerc):

OpenStudy (madmerc):

The answer choices are \[3x + 4 = −2x − 1\] \[3x + 2 = −x + 1\] \[3x + 4 = 2x − 1\] \[3x + 3 = −x + 1\]

OpenStudy (anonymous):

Your Y-intercepts are -1 and 4

OpenStudy (welshfella):

the 2 lines intersect at a point where x = -1 so the correct equation will be satisfied by x = -1 plug this value into each of the options and see which one fits.

OpenStudy (anonymous):

Also, your positive slope is 3 and your negative slope is -2

OpenStudy (welshfella):

for example lets try the first equation;- 3x + 4 = -2x - 1 3(-1) + 4 = -3 + 4 = ? -2(-1) - 1 = 2 - 1 = ? are these 2 values equal?

OpenStudy (madmerc):

no @welshfella

OpenStudy (madmerc):

wait is the answer the first one

OpenStudy (welshfella):

are you sure they are not equal?

OpenStudy (welshfella):

take another look

OpenStudy (madmerc):

wait yes hey are equal @welshfella

OpenStudy (welshfella):

yea they are both equal to 1 so A is the answer

OpenStudy (madmerc):

can you help me with another one @welshfella

OpenStudy (welshfella):

yes but plx make another post

OpenStudy (madmerc):

okay

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