3. Solve the system by substitution * y = -4x - 4 y = -8x (-1,8) (1,8) (1,-8)
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Step 1
The first equation is y = -4y - 8x. Substituting y = -4y - 8x into the second equation, we get -4y - 8x = -4(-4y - 8x) - 8x. Simplifying this equation, we get -4y - 8x = 16y + 32x - 8x. Combining like terms, we get -4y - 8x = 16y + 24x. Show more…
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