ian1588
29.08.2019 •
Mathematics
Paige claims that the solution to the system of linear equations y = 2x - 1 and -12x + 3y = 9 is (-2,-5).
select three methods that could be used to prove paige's claim.
a
substitute -5 forx and -2 for y into both equations and show that the equations are true.
b
solve 3 + 4x = 2x-1 for x and substitute into y= 2x - 1to find the value ofy.
c
g raph each linear equation and show that the intersection of the lines is (-2,-5).
solve -12x + 3(2x - 1) = 9 for x and substitute into y = 2x - 1 to find the value of y.
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Ответ:
A
Step-by-step explanation: