makayladurham19
24.03.2020 •
Mathematics
Use the parabola tool to graph the quadratic function f(x)=−(x−3)(x+1) .
Graph the parabola by first plotting its vertex and then plotting a second point on the parabola.
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Ответ:
The answer to your question is Vertex (1, 4) Point (0,3)
Step-by-step explanation:
Data
f(x) = -(x - 3)((x + 1)
Process
1.- Expand
f(x) = - (x² - 3x + x - 3)
- Simplify
f(x) = -(x² - 2x - 3)
-Complete the perfect square trinomial
- y = x² - 2x - 3
- y + 3 = x² - 2x
- y + 3 + (1)² = x² - 2x + (1)²
-y + 3 + 1 = x² - 2x + 1
- y + 4 = (x - 1)²
y - 4 = -(x - 1)²
Determine the vertex
V = (1 , 4)
-Solve for y
-y = (x - 1)² - 4
y = -(x - 1)² + 4
Determine a point
When x = 0
y = -(0 - 1)² + 4
y = -(-1)² + 4
y = -1 + 4
y = 3
Point (0, 3)
See the picture below
Ответ:
The given Inequality is
→N=Number(Dividend)
→4.2=Divisor
The statement is like this, when a number is divided by , 4.2, that is Quotient is less than or equal to 21.
Option A:→ The quotient of a number and 4.2 is less than or equal to 21.