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sashaice [31]
3 years ago
10

Which equation represents a linear function? Equation 1: y = 2x2 + 1 Equation 2: y = 8x + 1 Equation 3: y = 5x3 – 1 Equation 4:

y2 = 4x – 1
Mathematics
2 answers:
zloy xaker [14]3 years ago
7 0
Equation 2 is the only linear one due to the fact that there is no exponent on the x or y values. 
yKpoI14uk [10]3 years ago
5 0

Answer:

Equation 2: y = 8x

Step-by-step explanation:

A linear function or equation is one in which the variables involved have no exponents other than 1.

the options are:

Equation 1: y = 2x^2 + 1

Equation 2: y = 8x

Equation 3: y = 5x^3 - 1

Equation 4: y^2 = 4x - 1

Equation 1 has a quadratic exponent, the same for Equation 4.

And Equation 3 has a cubic exponent.

So the only equation that is linear is the Equation 2, because there are no exponents other than 1 in the expression.

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R+b=7 <br> 3.75r+2.75b=22.25
stiv31 [10]

Answer:

Step-by-step explanation:

hello :

r+b=7... (*)

3.75r+2.75b=22.25.... (**)

use (*) :  r = 7 - b

put this value in (**) :

3.75(7 - b)+2.75b =  22.25

26.25 -375b +2.75b = 22.5

-375b +2.75b = 22.5 - 26.25

- b = -3.75

so : b  = 3.75

but : r = 7 - b

r = 7 - 3.75

r = 3.25

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alexgriva [62]
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Ratling [72]
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5. Find cos theta if sin theta= -12/13<br> and tan theta &gt; 0. (6 points)
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