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Question
My daughter needs to find the rule for this function table.
Input (x) are -1 0 and 3
Output (y) are -7 -5 and 1
Questioner: Angela
Country: United States
Category: Advanced Math
Private: No
Subject: function tables
Question: My daughter needs to find the rule for this function table.
Input (x) are -1 0 and 3
Output (y) are -7 -5 and 1
..............................................
There are many such rules. But if you are restricted to linear functions, then simply apply the slope-intercept principles:
the slope is clearly 2.
the intercept is obviously -5:
f(x) = 2x - 5.
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Paul Klarreich
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I can answer questions in basic to advanced algebra (theory of equations, complex numbers), precalculus (functions, graphs, exponential, logarithmic, and trigonometric functions and identities), basic probability, and finite mathematics, including mathematical induction. I can also try (but not guarantee) to answer questions on Abstract Algebra -- groups, rings, etc. and Analysis -- sequences, limits, continuity. I won't understand specialized engineering or business jargon.
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I taught at a two-year college for 25 years, including all subjects from algebra to third-semester calculus.
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