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Dmitry_Shevchenko [17]
3 years ago
13

Struggling, can anyone help me out on these three functions? It would be much appreciated. Thanks so much!! :)

Mathematics
1 answer:
Maurinko [17]3 years ago
8 0

Answer:

1. a) Not function

b) Domain is all real numbers greater than or equal 2 (x ≥ 2)

c) The range all real numbers ( -∞ < y < ∞)

2. a) Function

b) The domain is all real numbers (-∞ < x < ∞)

c) The range is all real number greater than or equal -4 (y ≥ -4)

3. a) Not function

b) domain is {-3 , -2 , -1 , 0 , 1 , 3}

c) The range is {-2 , -1 , 1 , 2 , 3 , 5}

Step-by-step explanation:

1. Not a function because some x has more than one corresponding y

Note: If we draw vertical line and move it left and right over the curve it will cut the cure in more than one point that means one x has more than one y

2. Function because every x has one corresponding y

3. Not function because some x have more than one corresponding y like

   (-3 , -2) (-3 , 2) and (3 , -1) (3 , 2)

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What are the values of the coefficients and constant term of 0 = 4 – 7x2 + x in standard form?
katen-ka-za [31]

ANSWER

a =  - 7

b = 1

c = 4

EXPLANATION

The given quadratic equation is:

0 = 4 - 7 {x}^{2}  + x

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Read 2 more answers
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