Question

Identify an equation in point slope form for the Line perpendicular to y=-4x-1 that passes through (-2,7)

Answer 1

`y - 7 = (1)/(4)(x + 2)`

Explanation:

Insert the coordinates into the formula with their CORRECT signs. Remember, in the Point-Slope Formula, y - y₁ = m(x - x₁), all the negative symbols give the OPPOSITE terms of what they really are. Plus, perpendicular lines have OPPOSITE MULTIPLICATIVE INVERSE RATE OF CHANGES [SLOPES] so −4 becomes ¼.

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