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Marrrta [24]
3 years ago
12

Find the equation of the line that contains the point (3,9) and is parallel to the line y=4x+1. Write the line in slope-intercep

t form. Graph the lines
Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
5 0
Y = 4x + 1....slope here is 4. A parallel line will have the same slope

y = mx + b
slope(m) = 4
(3,9)...x = 3 and y = 9
now we sub and find b, the y int
9 = 4(3) + b
9 = 12 + b
9 - 12 = b
-3 = b

so ur parallel equation is : y = 4x - 3
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Solve the system of linear equations using the Gauss-Jordan elimination method.
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Answer:

x = -0.6

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z = 2

Step-by-step explanation:

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x + 3y - z = 4

3x + 4y - z = 5

Rewrite the system in matrix form and solve it by Gaussian Elimination (Gauss-Jordan elimination)

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3 4 -1 5

R1 / 2 → R1 (divide the 1 row by 2)

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R2 - 1 R1 → R2 (multiply 1 row by 1 and subtract it from 2 row); R3 - 3 R1 → R3 (multiply 1 row by 3 and subtract it from 3 row)

1 0.5 -1 -1.5

0 2.5 0 5.5

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R2 / 2.5 → R2 (divide the 2 row by 2.5)

1 0.5 -1 -1.5

0 1 0 2.2

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1 0 -1 -2.6

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x = -0.6

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7 0
3 years ago
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Musya8 [376]

Answer: 1,4 is the answer

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Directions:
cricket20 [7]
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5 0
3 years ago
9/15+2/5 need help adding fractions
GenaCL600 [577]

Answer:

15/15 aka 1

Step-by-step explanation:

9/15 and 2/5

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9/15 and 6/15

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3 years ago
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