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Original Question
Give the equation of the line that is perpendicular to the line and passes through point (0, -1).Asked by Tina
Give the equation of the line that is perpendicular to the line y=x+4 and passes through point (0, -1).
Answers
Answered by
Reiny
since it is perpendicular, its slope must be -1 , the negative reciprocal of +1
so the equation must be
y = -x + b
but (0,-1) is the y-intercept, so
y = -x - 1
so the equation must be
y = -x + b
but (0,-1) is the y-intercept, so
y = -x - 1