Use substitution method & show your work.

y = x^2 + 3x - 1

4x + 1 = y

Question

Mathematics

Dominique Crosby

1 December, 05:36

Use substitution method & show your work.

y = x^2 + 3x - 1

4x + 1 = y

+1

Answers (1)

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America · Answer 1

4x + 1 = x^2 + 3x - 1

4x = x^2 + 3x - 2

0 = x^2 - x - 2

0 = x^2 - x + 1 - 3

0 = (x - 1) ^2 - 3

3 = (x - 1) ^2

sqrt 3 = (x-1) and ( - (x-1))

x = 1+sqrt 3 and 1-sqrt 3

sqrt means square root

Use substitution method & show your work.y = x^2 + 3x - 14x + 1 = y

Use substitution method & show your work.

y = x^2 + 3x - 1

4x + 1 = y