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algol13
3 years ago
15

How do i write a linear equation and graph it

Mathematics
1 answer:
marusya05 [52]3 years ago
6 0
Y= mx+b
b= y intercept
mx= slope
slope= rise/run

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Arrange the pairs of points in increasing order of the slopes of the lines joining them. (15, 30) and (20, 40)
gavmur [86]

Answer: m1 = 0.5

M2= 0.375

M3 = 2.25

M4 = 3.0

M5 = 13.5

M6 = 0.285

M7 = 7.0

Step-by-step explanation:

(20,40)-(15,30)=(5,10), m1=5/10=0.5

(18,48)-(12,32)=(6,16), m2=3/8=0.375

(72,32)-(27,12)=(45,20), m3=9/4=2.25

(60,20)-(45,15)=(15,5), m4=3.0

(243,18)-(27,2)=(216,16), m5=27/2=13.5

(24,84)-(18,63)=(6,21), m6=2/7=0.285...

(84,12)-(63,9)=(21,3), m7=7.0

4 0
3 years ago
Solve x2 + 4x + 8 = 0. (2 points)
USPshnik [31]

Answer:

x=-4/3

Step-by-step explanation:

7 0
3 years ago
It's a system of equations x=-4y x+6y=18
Misha Larkins [42]
Subsitute -4y for x

-4y+6y=18
2y=18
divide both sides by 2
y=9
sub back

x=-4y
x=-4(9)
x=-36

(x,y)
(9,-36)
3 0
4 years ago
3. Solve the system of equations using linear combination. <br><br> a + c = 9<br> 8a + 4.5c = 58
lana66690 [7]
Hey I have posted a picture the method I use to solve simultaneous equations is change the sign and follow the new sign.
This involves changing the sign for the second equation and solving it

5 0
3 years ago
Read 2 more answers
What is the simplest from of this expression? (-3x^2 + 4x) + (2x^2 - x -11)
mr Goodwill [35]

Answer:

D

Step-by-step explanation:

7 0
3 years ago
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