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
Temka [501]
3 years ago
12

Which of the following could be the equation of the graph shown below?

Mathematics
1 answer:
My name is Ann [436]3 years ago
8 0

Hey there! I'm happy to help!

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

<u>INTRODUCTION TO SLOPE INTERCEPT FORM</u>

Slope intercept form an equation for a line that includes a point, the slope, and the y-intercept. This equation can be modeled below.

y=mx+b

In this equation, m is the slope and b is the y-intercept.

The slope is how steep the line is.

The y-intercept is where the line runs into the y-axis.

Why do we even have this equation?

Well, we use it to build lines. It shows how the points of the line are oriented in terms of the two axes. If you knew that the x-value of a point was 1, you would plug it into the equation (if you had the values for x and b) and you would figure out what the y was. You would then plot this point and then do it with other numbers and then you would connect the dots and you have your line!

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

<u>PUTTING THE EQUATIONS IN SLOPE INTERCEPT FORM</u>

As you can see, not all of our equations are in slope intercept form. A and C are in slope intercept form, but B and D are not. Let's solve for y in these equations.

OPTION B

-4x+2y=-6

We add 4x to both sides.

2y=4x+-6

We divide both sides by two.

y=2x-3

OPTION D

2x-3y=-9

We subract 2x from both sides.

-3y=-2x-9

We divide both sides by -3.

y=-2/3x+3

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

<u>INTERPRETING THE GRAPH</u>

Y-INTERCEPTS

As we have said before, the y-intercept is where the line hits the y-axis. As we can see on the graph, the line hits the y-axis (the vertical one) below zero (zero is the center). This means that the y-intercept is negative.

Let's look at our equations. The y-intercept is the constant (the number without a variable). We know that our y-intercept has to be negative.

A: y=3x-2

B: y=2x-3

C: -10

D: -2/3x+3

As we see, A,B, and C have negative y-intercepts. These can move on. D does not. It is positive. Therefore, we can eliminate D as an option.

SLOPES

Let's look at the slope of each line. Our slope has to be positive because our line is sloping upwards.

A: y=3x-2

B: y=2x-3

C: 0 (the slope has to be zero because our y-value will always be -10 according to the equation. This is a flat, horizontal line so it will have a slope of zero. )

We see that both 3 and 2 make sense as slopes because they are both positive. C does not because C is a flat line. So, we can eliminate C as an option.

This leaves us with the equations A and B, which both make sense because they have positive slopes and negative y-intercepts. There is nothing else we can do to disprove any of them.

Therefore, the answer is A. y=3x-2 and B. -4x+2y=-6.

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

I hope that this helps! Have a wonderful day! :D

<u />

You might be interested in
Factor out the coefficient of the variable 1/2d+6
IrinaK [193]
Factoring out the 1/2 (that is the coefficient of the variable) would require you to divide the equation by one half, which is the same as multiplying by two. After doing this, the answer can be expressed as:

1/2 (d+12)
5 0
2 years ago
Read 2 more answers
Sabrina reads 15 pages per hour. She needs to finish a book with 120 pages. Which equation would you use to determine how many h
frozen [14]

Answer:

15x=120

Step-by-step explanation:

8 0
3 years ago
A company has 200 machines. Each machine has 12% probability of not working.
shutvik [7]

Answer:0.18665

2.0.00602

3.

1.0000

Step-by-step explanation:

8 0
3 years ago
Venn diagram help. solve for france
umka2103 [35]
What is the question?

6 0
3 years ago
Read 2 more answers
What is [2times6]-7+92+45<br> divided by 5
Vesna [10]
\frac{(2 \times 6) - 7 + 92 + 45 }{5} =  \frac{12 - 7 + 92 + 45}{4} =  \frac{142}{5} = 28.4

Hope that helps :)
7 0
3 years ago
Other questions:
  • What do you multiply the number of pounds
    12·1 answer
  • Can anybody explain to me what this question mean so it says "8 more than a number n is written ___________ in algebraic form"
    5·2 answers
  • Jamal uses the steps below to solve the equation 6x – 4 = 8.
    5·1 answer
  • Find the negative square root of twenty
    13·1 answer
  • Of the following types of energies that the Earth receives from the Sun, which type of energy causes
    9·1 answer
  • 1. You pay $150 per month total. How much is that per week?
    5·1 answer
  • 29/1000
    12·1 answer
  • Whats the solutions!?? look at the picture ​
    12·1 answer
  • Ganesh is making a scale model of the Space Needle in Seattle, Washington. The Space Needle is 605 feet tall. If the model is th
    14·2 answers
  • Write 63/16 as a improper fraction
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!