nuggetslices
11.02.2020 •
Mathematics
PLEASE HELP ME
Which of the following statements describe the system
{y=3x+2y=y−2x−1? Select two answers.
A.consistent
B.inconsistent
C.infinite solutions
D.one solution
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Ответ:
A.consistent
D.one solution
Step-by-step explanation:
Assuming the system has equations
Then we can examine the gradients to make our choice without necessarily solving the equations.
Interestingly, both equations are in slope-intercept form. (y=mx+c) where m=3 is the slope of the first equation and m=2 is the slope of the second equation.
Since the slopes are not the same the lines are not parallel.
Non-parallel lines in the same plane will meet at only one point, there is only one solution.
The system is consistent because there exist a solution.
Ответ:
B.
Step-by-step explanation:
They have correctly plotted the table.
(Two players have shoe size 9 and two have shoe size 8 1/2)