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
34kurt
3 years ago
12

How many solutions does this system have? y=5x-1 y=-3+7

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
8 0
I'll assume that's

y=5x-1

y=-3x + 7

Please let me know if that's wrong.

These are two lines in point slope form.   They'll meet at some x that makes the ys equal.


5x-1 = -3x + 7

5x + 3x =1+ 7

8x= 8

x= 1
 
y=5x-1 = 5(1)-1 = 4

(x,y)=(1,4) is the only solution.

Exactly one solution.

We really only had to ensure the lines had two different slopes.  Then there's always exactly one solution.

If the lines had the same slope, they're either the same line (coincident) so an infinite number of solutions, all the points on that line, or they're parallel, no solutions.


You might be interested in
HELP PLEASE:
sattari [20]

Answer:

Its 40 for the first and 20for the other one

Step-by-step explanation:

I just took the test.

3 0
3 years ago
Read 2 more answers
Pls helppp me with this!!
zepelin [54]

Answer:4

Step-by-step explanation: Because 4 goes in 3/4 better and more eqvilent to that answer.

7 0
2 years ago
Read 2 more answers
Which is a better estimate for the weight of a double-decker bus
tia_tia [17]

Step-by-step explanation:

Coaches are typically sized to a height of 4.38 meters, whereas 'high-bridge' vehicles are usually around 20 centimeters higher. At an average height of 18.65 metres, integrated double-deckers are often permitted .

3 0
2 years ago
Jim is 5 years older than Cindy. 4 years ago, the sum of their ages was 21. Find each of their ages now.
Dmitry_Shevchenko [17]
Jim is 16 because take away 21-5=16.Now Cindy 21-4=17.Cindy is 17.Jim is 16.
4 0
3 years ago
Triangles ABC and DEF are similar.
vivado [14]
All I can really remember is find the scale factor and divide it by the segment
3 0
3 years ago
Other questions:
  • Praedup uses the inequality r+2≥25 to represent his rock and shell collection, where r is the number of rocks in his collection.
    14·1 answer
  • Which is larger 12cm or 98mm
    14·1 answer
  • serena is the manager at a coffee shop the amount of money she earns is represented by m=21h. how much more per hr does she earn
    10·1 answer
  • What are the solutions of the equation x^6-9x^3+8=0
    6·1 answer
  • Can someone please help me this?<br> Math 8
    9·1 answer
  • Evaluate 7c4<br> a. 6<br> b. 1<br> c. 35<br> d. 840
    13·2 answers
  • Simplify the following and express the result in positive exponential form
    7·1 answer
  • Hey! please help i’ll give brainliest
    9·2 answers
  • What is the answer to: −15+(−22)−10+5<br> Please explain.
    12·1 answer
  • A restaurant offers a catering service which costs $25.00 per person with a $119.50 service charge. For parties of 50 or more pe
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!