Write the equation of a line perpendicular to y=3x+5 and passes through the point (1,7).

y = -3x + 10

Step-by-step explanation:

The slope of perpendicular line is the opposite and reciprocal of the original line.

3 -> -3

Find the new y-intercept.

y = -3x + b

7 = -3(1) + b

7 = -3 + b

10 = b

y = -3x + 10

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step-by-step explanation: