barboursj
01.10.2019 •
Mathematics
Consider the following pair of equations:
y = x + 4
y = –2x – 2
explain how you will solve the pair of equations by substitution. show all the steps and write the solution in (x, y) form.
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Ответ:
-2x = x + 6
3x + 6 = 0
x + 2 = 0
x = -2
y = x + 4
= 4 + -2
=2
(x, y) = (-2, 2)
Ответ:
None of them have perpendicular lines except for the blue one if I am seeing right.