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1 vote
When 3 is substituted for x, in the equation y=x2-4 what is y.

2 Answers

7 votes

Answer:

y=5

Explanation:

Substitute 3 in for x

y=x^2-4

y=(3^2)-4

Find the exponent first

y=9-4

Subtract

y=5

Hope this helps! :)

User AweSIM
by
8.0k points
5 votes

Answer:

y = 2

Explanation:

plug in the x value given, y = 3(2) - 4

simplify, y = 6 - 4

y = 2

User Tjackadams
by
8.0k points

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