Which equation is quadratic in form?

Domain and range of the graph, is it a function?

Elenna [48]

Answer:

domain: [0, ∞)
range: (-∞, ∞)
not a function

Step-by-step explanation:

The arrows indicate the graph continues indefinitely in the direction indicated.

The domain is the horizontal extent, so is the interval from 0 to infinity, including 0.

The range is the vertical extent, so extends from negative infinity to positive infinity (all real numbers).

The graph does not pass the vertical line test: a vertical line intersects it in more than one place, so the relation is NOT a function.

4 0

2 years ago

Let u =<-4,-3> . Find the unit vector in the direction of u, and write your answer in component form.

vova2212 [387]

Can someone answer this for me too

4 0

2 years ago

Order of the set of numbers from least to greatest : Square root of 64, 8 1/7,8.14...,15/2 please help

KIM [24]

Answer:

15 /2 , Square root of 64, 8.14, 8 1/7

4 0

2 years ago

What is 6X + 9 + 2x

alukav5142 [94]

Answer:

8x + 9

Step-by-step explanation:

Combine 6x and 2x since they are "like variables" meaning they both contain an x, and write in standard form ax + bx + c

6 0

2 years ago

4. If DF = 9x - 39, find EF. Help I’m so confused!!!!

topjm [15]

Answer:

EF =58

Step-by-step explanation:

from the illustration,

EF =DF - DE

given that DF =9x-39 , DE =47 EF=3x +10

substitute them into the formula,

3x +10=9x-39 - 47

solving for x

3x +10 =9x -86

grouping like terms

3x - 9x =-86 -10

-6x=-96

dividing through by -6

 $\frac{ - 6x}{ - 6} = \frac{ - 96}{ - 6}$ 

 $x = \frac{96}{6}$ 

 $x = 16$ 

but EF=3x+10

substitute x=16 into it to get the EF

EF= 3(16)+10

EF=48+10

EF=58

6 0

2 years ago

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