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what is the y-intercept for f(x)=x2-8x+15

Sagot :

Space

Answer:

(0, 15)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Algebra I

  • Function Notation
  • The y-intercept is the y value when x = 0. Another way to reword that is when the graph crosses the y-axis.

Step-by-step explanation:

Step 1: Define

f(x) = x² - 8x + 15

Step 2: Find y-intercept

  1. Substitute x = 0:                    f(0) = 0² - 8(0) + 15
  2. Exponents:                             f(0) = 0 - 8(0) + 15
  3. Multiply:                                 f(0) = 0 + 15
  4. Add:                                       f(0) = 15
  5. Rewrite:                                 (0, 15)
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