What is the ordered pair for point K?
2 answers:
Answer:
The correct option is 1. The ordered pair for point K is (4,-5).
Step-by-step explanation:
If an ordered pair for point P is (x,y), then x is the distance between point and y-axis and y is the distance between point and x-axis.
From the given graph it is clear that the the distance between point K and y-axis is 4 units.
The distance between point K and x-axis is 5 units. The negative sign represents that the point K lie below the x-axis.
The ordered pair for point K is (4,-5).
Therefore the correct option is 1.
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The solutions to f(x) = 64 is x = 7 and x = –7.
Solution:
Given data:
and
To find the solutions when f(x) = 64.
Both are equations of f(x), so equate the given equations, we get
Subtract 15 from both sides of the equation.
49 can be written as 7².
Taking square root on both sides of the equation, we get
x = ±7
The solutions to f(x) = 64 is x = 7 and x = –7.
Answer:
first option
Step-by-step explanation:
3x² - 18x + 5 = 47 ( subtract 5 from both sides )
3x² - 18x = 42 ( divide through by 3 )
x² - 6x = 14
Using the method of completing the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 3)x + 9 = 14 + 9
(x - 3)² = 23 ( take square root of both sides )
x - 3 = ± ( add 3 to both sides )
x = 3 ±