k3ydag0at
16.10.2020 •
Mathematics
Classify the system of equations and identify the number of solutions.
4x - y = 2
3y = 12x - 6
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Ответ:
x = all real numbers
Step-by-step explanation:
first you need to solve the first equation to figure out what y is.
4x - y = 2
add y to both sides of the equation
4x = 2 + y
subtract 2 from both sides of the equation
4x - 2 = y
now that you know what y is, you can substitute it in the next equation.
3y = 12x - 6
3(4x - 2) = 12x - 6
open the parenthesis
12x - 6 = 12x - 6
subtract 12x from both sides of the equation
-6 = -6
regardless of what x is, -6 will always equal -6.
so, the answer is all real numbers.
Ответ:
D
Step-by-step explanation: