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Vaselesa [24]
3 years ago
11

Write an equation of the line that passes through (-1,4) and is perpendicular to the line y=-1/3x+3​

Mathematics
2 answers:
Angelina_Jolie [31]3 years ago
8 0

Answer:

y = 3x + 7

Step-by-step explanation:

If the line is perpendicular to y = -1/3x + 3, then the slope will be the reciprocal of 3.

y = 3x + b

To find b, plug in the known point of (-1, 4)

4 = 3(-1) + b

Solve.

4 = -3 + b

7 = b

Your equation is: y = 3x + 7

Oksana_A [137]3 years ago
4 0

Step-by-step explanation:

Alternate way of doing this using the point-slope formula.

Since y = -3x + 1 is in y=mx + b format, the slope is -3.

m = -3

The slope of the line perpendicular to y = -3x + 1 must be -(1/-3), or 1/3, since m1 = -1/m2.

Point - slope formula:

y - y1 = m (x - x1).

y - 4 = (1/3) (x - 1)

y - 4 = (1/3)x - 1/3

y = (1/3)x - 1/3 + 4

y = (1/3)x - 1/3 + 12/3

y = (1/3)x + 11/3

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