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Find the equation of the line that passes through (3,1) and is parallel to y = 1 - 2x.

Leave your answer in the form y = mx + c

1 Answer

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Answer:

y = -2x + 7

Explanation:

y = 1 - 2x can be written

y = -2x + 1

Parallel lines have the same slope. The slope for the parallel line is -2. This is the number before the x.

To write an equation in the slope intercept form, we need the slope and the y-intercept. We have the slope. To find the y-intercept will will use the slope, and the values y (3,1) and the value of x (3,1) from the point given

substitute 1 for y, -2 for m, and 3 for x.

y = mx + b

1 = (-2)(3) + b

1 = -6 + b Add 6 to both sides

1 + 6 = -6 + 6 + b

7 = b

The y-intercept is 7.

Substitute -2 for m and 7 for b to write the equation

y = mx + b

y = -2x + 7

Helping in the name of Jesus.

User Vasilij Altunin
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