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Harlamova29_29 [7]
3 years ago
13

Write an equation of the line passing through the points (3,1) and (−1, −7).

Mathematics
2 answers:
ioda3 years ago
4 0
The answer is y = 2x - 5.
bija089 [108]3 years ago
4 0

Answer:

y=2x-5

Step-by-step explanation:

\frac{1-(-7)}{3-(-1)}=\frac{8}{4} = 2\\\\(3,1)\\y=2x+b\\1=2(3)+b\\1=6+b\\1-6=b\\-5=b\\\\OR\\\\(-1, -7)\\y=2x+b\\-7=2(-1)+b\\-7=-2+b\\-7+2=b\\-5=b

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Are angles congruent when their side measures are the same
Mkey [24]

Answer:

I don't believe so because congruent shapes are exactly the same but a side measurement could be the same on a square and a triangle but those aren't congruent shapes


I hope this helped!


4 0
3 years ago
Eli and Karl each throw a basketball straight up in the air at the same time. Eli is standing on a deck and the height of his ba
tino4ka555 [31]
We are to find the time at which the height of basketball thrown by Eli and Karl is equal. We have the functions which model the heights of both basketballs. So by equating the functions representing the height of both basketballs we can find the value of x from that equation at which the height is same for both basketballs.

-4.9 x^{2} +12x+2.5=-4.9 x^{2} +14x \\  \\ 
12x+2.5=14x \\  \\ 
2.5=2x \\  \\ 
x=1.25

Thus after 1.25 seconds the height of basketballs thrown by Eli and Karl will be at the same height. This can be verified by finding the heights of both at x=1.25

For Eli:
Height=f(1.25)=-4.9 (1.25)^{2}+12(1.25)+2.5=9.84375

For Karl:
Height=f(1.25)=-4.9 (1.25)^{2}+14(1.25)=9.84375

Thus height of both basketball is equal after 1.25 seconds


5 0
3 years ago
Read 2 more answers
How to solve this I am not the best at math
Brrunno [24]
Try  it is a great site that you can plug problems in to for the answers! I hope this is helpful!!
5 0
3 years ago
Using the quadratic equation formula to solve 7x^2-x=7, what are the values of x
Gennadij [26K]

quadratic formula:

x = <u>-b ± √(b² - 4ac)</u>

             2a

7x² - x = 7

subtract 7 from both sides:

7x² - x - 7 = 0

plug values into the quadratic formula:

x = <u>-(-1) ± √((-1)²- 4(7)(-7))</u>

               2(7)

simplify:

x = <u>1 ± √(197)</u>

           14

8 0
3 years ago
I need helpppp?!!!<br> What is the slope of the line??<br> Please give right answer
galben [10]

Answer: -1/2

Step-by-step explanation:

Slope=rise/run

Up 1 and to the left 2 which makes it a negative

6 0
3 years ago
Read 2 more answers
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