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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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What is the equation, in standard form, of a parabola that models the values in the table?
kirza4 [7]
<span> f(x) = ax^2 + bx + c

f(0) = ax^2 + bx + c = 5, c = 5
f(-2) = 4a + -2b + 5 = 1 ----------(1)
f(4) =16a + 4b + 5 = -59 ----------(2)
4a -2b = -4
</span><span>16a + 4b = -64 
16a + 4(-2-2a)= -64
16a - 8 - 8a = -64
8a = -56
<span>a = 7
</span>4a - 2b = -4 
28 - 2b = -4
b = 16

</span><span>f(x) = 7x^2 + 16x + 5</span>
5 0
3 years ago
A group of chemists are conducting an experiment to produce a new liquid material. One chemical contains 15% sodium (Na) and the
lesantik [10]

Answer:

A= 320 and B = 280

Step-by-step explanation:

  • Amount of sodium from first material = 0.15*A
  • Amount of sodium from second material = 0.3*B

Now, if we combine the two chemicals to get a new chemical, which is  22% sodium, then the total amount of combined sodium is  amount of sodium from both sources

<=> 0.15A + 0.3B =  0.22*(A+B)

<=> 0.07A - 0.08B =  0 (1)

-  But we have a second equation, because we  know that   A + B = 600 (2)  

Solve the system of two equations, (1) and (2), we have:

A= 320 and B = 280

4 0
3 years ago
Which could be the dimensions of a rectangular prism whose surface area is less than 160 square feet? Select two options.
Sloan [31]
Try to do pathegoram theorem and you will find your answer
8 0
2 years ago
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5. Joey has $125 to spend on school clothes this year. He only spent $80.00 on school
OLga [1]

Answer:

64%

Step-by-step explanation:

divide 80 by 125 and get .64

7 0
2 years ago
Read 2 more answers
PLEASE HELP
enot [183]
The triangles are shown to be similar, therefore

\displaystyle \frac{54}{12} = \frac{x}{2} \\ \\&#10;x = 2 \cdot \frac{54}{12} \\&#10;x = 9

The answer is 9 units
8 0
3 years ago
Read 2 more answers
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