2nd Edition

ISBN: 9781259985607

Author: David Sobecki Professor, Brian A. Mercer

Publisher: McGraw-Hill Education

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.

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Textbook Question

Chapter 4, Problem 17LSR

Carefully read through the list of terminology we’ve used in Unit 4. Consider circling the terms you aren’t familiar with and looking them up. Then test your understanding by using the list to fill in the appropriate blank in each sentence.

$d = ( x 2 − x 1 ) 2 + ( y 2 − y 1 ) 2 x = − b ± b 2 − 4 a c 2 a x = − b 2 a$

arbitrary

binomial

coefficient

conjecture

counterexample

deductive reasoning

equivalent

expanded form

exponential decay

exponential function

exponential growth

f(x)

factored form

factoring

factors

function

growth factor

hypotenuse

inductive reasoning

inverse variation

isosceles

margin of error

parabola

parameters

perfect squares

polynomial

prime polynomial

profit

quadratic function

revenue

right triangle

standard form

symmetry

terms

trinomial

vertex

zero

In an_______________ equation like $y = a · b x , a$ will be positive and the value of b will be greater than 1.

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Chapter 4, Problem 16LSR

Chapter 4, Problem 18LSR

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Solution Summary: The author explains that in an exponential growth equation like y=acdot bx, a will be positive and the value of b is greater than 1.

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