callierichard callierichard
  • 20-10-2021
  • Mathematics
contestada

What is an equation of the line that passes through the point (−4,5) and is perpendicular to the line 4x+y=7

Respuesta :

towl35
towl35 towl35
  • 24-10-2021

Answer:

[tex]y = \frac{1}{4} x + 6[/tex]

Step-by-step explanation:

rewrite the original equation

[tex]4x + y = 7 \\ y = - 4x + 7[/tex]

perpendicular line has a negative reciprocal slope. I will use this slope and substitute the points to find our y-intercept

[tex]5 = \frac{1}{4} ( - 4) + b \\ 5 = - 1 + b \\ b = 6[/tex]

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