1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Delvig [45]
3 years ago
9

Which of the following has a graph that is a straight line? (4 points) Equation 4: y = 3x3 Equation 3: y = 2x2 + 4 Equation 1: y

= 2x + 7 Equation 2: y2 = x − 1
Mathematics
2 answers:
kondor19780726 [428]3 years ago
6 0

Answer:

Equation 1: y = 2x + 7  has a graph that is a straight line

Step-by-step explanation:

Equation 4: y = 3x^3

Equation 3: y = 2x^2 + 4

Equation 1: y = 2x + 7

Equation 2: y^2 = x − 1

The graph will be a straight line for linear equation

When the largest exponent is 1 then it is a linear equation

Equation 1: y = 2x + 7 , largest exponent is 1 so it is linear

Equation 2: y^2 = x − 1, highest exponent is 2 so it is not linear

Equation 3: y = 2x^2 + 4 , highest exponent is 2 so it is not linear

Equation 4: y = 3x^3 , highest exponent is 3 so it is not linear

Equation 1: y = 2x + 7  has a graph that is a straight line

Ray Of Light [21]3 years ago
3 0
The equation of the line: y = mx + b.

Therefore your answer is Equation 1: y = 2x + 7.
You might be interested in
A dog breeder would like to know how many Dalmatian puppies are typically born in a litter. He conducts some research and select
podryga [215]

Answer:

c. 6.2 ± 2.626(0.21)

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 101 - 1 = 100

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 100 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.99}{2} = 0.995. So we have T = 2.626

The confidence interval is:

\overline{x} \pm M

In which \overline{x} is the sample mean while M is the margin of error.

The distribution of the number of puppies born per litter was skewed left with a mean of 6.2 puppies born per litter.

This means that \overline{x} = 6.2

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.626\frac{2.1}{\sqrt{101}} = 2.626(0.21)

In which s is the standard deviation of the sample and n is the size of the sample.

Thus, the confidence interval is:

\overline{x} \pm M = 6.2 \pm 2.626(0.21)

And the correct answer is given by option c.

5 0
3 years ago
PLEASE HELP ASAP 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER
mash [69]

Answer:

(-6,9,-3)

Step-by-step explanation:

-3x -y +z=6

-3x-y+3z =0

x-3z =3

Multiply the second equation by -1

-1 *(-3x-y+3z) =0*-1

3x +y -3z =0

Add this to the first equation

-3x -y +z=6

3x +y -3z =0

----------------------

0 + 0 + -2z = 6

Divide by -2

-2z/-2 = 6/-2

z = 6/-2

z=-3


Take the third equation to find x

x-3z=3

x-3(-3) = 3

x+9=3

Subtract 9 from each side

x+9-9 =3-9

x=-6

Now we need to find y

3x +y -3z =0

3(-6) +y -3(-3) =0

-18 +y +9=0

-9+y =0

Add 9 to each side

-9+9+y = 0+9

y=9

(-6,9,-3)

3 0
3 years ago
Read 2 more answers
Need help with geometry
ra1l [238]
The answer is x=3 because abt+tbc=abc
3 0
3 years ago
A real estate agent sold Amar's home so he could relocate for a job. The company hiring Amar paid the real estate agent $14,000,
sasho [114]
The house is 91000 dollars.    14000 x 6.5
 F U jackmac





3 0
3 years ago
Which best describes the relationship between the line that passes through the points (1, –6) and (3, –2) and the line that pass
Setler [38]
Both lines are parallel, since they have the same slope of 2.
8 0
3 years ago
Other questions:
  • 15. What is the value of (1/2)3? <br><br> A. 1/6<br> B. 1/8<br> C. 1/2<br> D. 11/2
    8·1 answer
  • Triple A number is the same as double the number increased by 5
    5·2 answers
  • If the diameter in a circle is half of a yard, then it’s radius is how many inches?
    12·1 answer
  • A golf course charges $18 to golf 18 holes and $7 for a cart for a no-member.
    7·1 answer
  • Molly has a jar containing 4 yellow, 3 blue, 3 green, and 2 orange marbles
    13·1 answer
  • A farmer has a rectangular field.the field is 300m long and 200m wide. calculate the perimeter of the field
    7·1 answer
  • Please help ASAP thank you!
    15·2 answers
  • One of the exterior angle is 120° and the interior opposite angles are in the ratio 1:5. Find the interior opposite angles of th
    10·1 answer
  • The volume of the prism shown in 60 cm Given the dimensions shown below, what would be the value of x ?
    12·1 answer
  • What is the solution to -8(5-3n+7n)=-40+24n-56n= ?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!