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

(0, 15)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Function NotationThe 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

Substitute x = 0:                    f(0) = 0² - 8(0) + 15Exponents:                             f(0) = 0 - 8(0) + 15Multiply:                                 f(0) = 0 + 15Add:                                       f(0) = 15Rewrite:                                 (0, 15)

the image of (6, 9) under a dilation is (4, 6). the scale factor is

b. 2/3

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