2-119. Find the and and the vertex of = + 2x 80. Then sketch the and write the x yintercepts y x2 − equation in graphing form. 2-120. Is a term in the sequence defined by = + 7? Justify your answer. t(n) −578 −5n Lesson 2.2.2 2-102. See below: = (x y –4)2 Yes; justifications vary Answers vary. Students could look at the value that will make the quantity in the parentheses equal to zero. 2-103. Possibilities include: lines, parabolas, hyperbolas, cubics, square root functions, exponentials, and absolute value functions 2-105. = = + y x; y a(x − h) k = + 1) + 5; = + 1) + 5, = y m(x m(8 m −2 − 2-107. See below: = (x 2)2 + 3 y − = (x 2)3 + 3 y − = + 6)2 y −2(x 2-108. See below: domain: all real numbers, range: 3 y ≥ domain: all real numbers, range: all real numbers domain: all real numbers, range: 0 y ≤ 2-109. See below: compresses or stretches shifts up or down shifts left or right shifts up or down
2-119. Find the x and yintercepts and the vertex of y = x2 + 2x − 80. Then sketch the and write the equation in graphing form. 2-120. Is −578 a term in the sequence defined by t(n) = −5n + 7? Justify your answer. Lesson 2.2.2 2-102. See below: y = (x –4)2 Yes; justifications vary Answers vary. Students could look at the value that will make the quantity in the parentheses equal to zero. 2-103. Possibilities include: lines, parabolas, hyperbolas, cubics, square root functions, exponentials, and absolute value functions 2-105. y = x; y = a(x − h) + k y = m(x + 1) + 5; −2 = m(8 + 1) + 5, m = − 2-107. See below: y = (x − 2)2 + 3 y = (x − 2)3 + 3 y = −2(x + 6)2 2-108. See below: domain: all real numbers, range: y ≥ 3 domain: all real numbers, range: all real numbers domain: all real numbers, range: y ≤ 0 2-109. See below: compresses or stretches shifts up or down shifts left or right shifts up or down
rFyQC1Q1falkt09BlXbuUhtQ6EC6reBHLAfQLcwG2iRUbADV.docx