justmarcus563 justmarcus563
  • 20-03-2020
  • Mathematics
contestada

What is the slope of a line that contains the point (1,-5) and has the same y-intercept as 2x-y=9?

Respuesta :

Branta Branta
  • 27-03-2020

Answer:

The slope of the required line is 4.

Step-by-step explanation:

Let the equation of the line be represented as [tex]\[y=mx+c\][/tex]

Given line with the same y-intercept is represented as:

[tex]\[2x-y=9\][/tex]

[tex]\[=>y=2x-9\][/tex]

So the intercept of the 2 lines is -9.

Hence, the equation of the required line becomes [tex]\[y=mx-9\][/tex]

But this line passes through the point (1,-5)

[tex]\[=>-5=m*1-9\][/tex]

[tex]\[=>m=9-5\][/tex]

[tex]\[=>m=4\][/tex]

So the slope of the required line is 4.

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