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
7nadin3 [17]
2 years ago
8

Hey can someone tell me the steps to solving a system of equations with graphing

Mathematics
1 answer:
ryzh [129]2 years ago
4 0

Answer:

Let's go through the following example to show how to solve a system of equations by graphing. I won't solve this system, I will just show how to.

8x-3y = 17\\4x+y=21

<h3>If you can use an online graphing calculator...</h3>

If you have an online grapher (like Desmos) at your disposal, then you can put each equation in it as it is.

  • Lines intersect -> Put your cursor over the point of intersection to get the solution.
  • Lines never intersect -> The lines are parallel and there is no solution
  • Lines perfectly fall on each other -> The lines are the same and have infinite solutions

<h3>If you have a physical graphing calculator (like TI-84)</h3>

1. Get both equations in the form y=mx+b by solving for y.

8x-3y=17\\-3y=-8x+17\\y=\frac{8}{3}x-\frac{17}{3}               4x+y=21\\y=-4x+21

2. Put both equations in the graphing calculator

  • Lines intersect -> Find the intersection point using your graphing calculator's mechanics (each one is a little different)
  • Lines never intersect -> The lines are parallel and there is no solution
  • Lines perfectly fall on each other -> The lines have the same equation and have infinite solutions

<h3>If you just have graphing paper...</h3>

1. Get both equations into the form y=mx+b by solving for y.

8x-3y=17\\-3y=-8x+17\\y=\frac{8}{3}x-\frac{17}{3}                    4x+y=21\\y=-4x+21

2. Plug in a few different points for x and calculate their y-values.

3. Plot those points on the graph paper

  • Lines intersect -> Find the intersection point's coordinates to get the solution for x and y.
  • Lines never intersect -> The lines are parallel and there is no solution
  • Lines perfectly fall on each other -> The lines have the same equation and have infinite solutions.
You might be interested in
Pls help I give brainliest to the best!!!!!!!!!!
Neporo4naja [7]

Answer:

m

2

−2m+3

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
7/7q+21= x /5q^2-45 then x=?​
anzhelika [568]

Answer:

x = 5q - 15

Step-by-step explanation:

\frac{7}{7q+21}=\frac{x}{5q^{2}-45}\\\\\frac{7}{7(q+3)}=\frac{x}{5 (q^{2} -9)}\\\\frac{1}{q+3}=\frac{x}{5*(q^{2}-3^{2})}\\\\\frac{1}{q+3}=\frac{x}{5(q+3)(q-3)}\\\\\frac{1}{q+3}*5*(q+3)(q-3)=x\\\\5(q-3)=x\\\\x= 5q-15

3 0
2 years ago
For altitudes up to 36,000 feet, the relationship between ground temperature and atmospheric
Anon25 [30]

Answer:

a=16400 feet

Step-by-step explanation:

t = -0.0035 a +g

-17.40 = -0.0035 a+40

-17.40-40=-0.0035a+40-40

-57.40=-0.0035a

a = -57.40/-0.0035

a=16400 feet

7 0
3 years ago
Help me please I don’t know it
avanturin [10]
C both of these is correct
4 0
2 years ago
Please help with my math work !<br> due tomorrow morning
Y_Kistochka [10]

Answer:

y=2x+6

Hope This Helps! :)

3 0
2 years ago
Other questions:
  • Rename 120,000 ten thousand
    13·1 answer
  • What is 45% of 726 how do u get it
    14·1 answer
  • Amount Financed (m) = $2,500 Number of Payments per year (y) = 12 Number of Payments (n) = 36 Total Interest (c) = $158.15
    13·2 answers
  • The following table shows the estimated populations and annual growth rates for four countries in the year 2000. Find the
    12·1 answer
  • •Find the degree of each monomial<br>5x²<br> ​
    11·1 answer
  • What is the likelihood of drawing a blue marble, if the probability of drawing a blue marble is 1?
    7·1 answer
  • Help me answer to meet any Anime you want <br> This is 50 points explain and help answer
    13·1 answer
  • Which one of these is not congruent to angle 5?
    14·1 answer
  • (Geometry)
    11·1 answer
  • Claire is baking items for a school bake sale. She needs 2 cups of flour for cookies, and 1 cups of flour for banana bread. How
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!