y = x^2 −14x+22 The given equation relates the variables x and y. For what value of x does the value of y reach its minimum?
Correct answer: 7 (parsed from the explanation — this source omits an answer key for this item)
Explanation
= 2+ + The correct answer is 7. When an equation is of the form y ax bx c, where a, =- b b, and c are constants, the value of y reaches its minimum when x . Since 2a = 2+ + = =-14 the given equation is of the form y ax bx c, it follows that a 1, b , and c = 22. Therefore, the value of y reaches its minimum when x =-^2 -1 1 4 h, or x = 7. ^ h
Loading…
Searched on YouTube by topic, not by question text. Open this search on YouTube →
Extracted from PDF layout: equations, figures and tables do not survive intact. Use the original PDFs for anything the text renders poorly. SAT® is a trademark registered by the College Board, which is not affiliated with and does not endorse this project.