1fuzzybirdow6e0s 1fuzzybirdow6e0s
  • 04-06-2019
  • Mathematics
contestada

What is the y-coordinate of the point of intersection for the two lines given below?

A: 4
B: -14
C: -3
D: -2

What is the ycoordinate of the point of intersection for the two lines given below A 4 B 14 C 3 D 2 class=

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Luv2Teach
Luv2Teach Luv2Teach
  • 05-06-2019

Answer:

B. -14

Step-by-step explanation:

If you solve the system using the method of elimination, the y terms will automatically cancel each other out without any manipulation at all.  So go with it and solve for x first.  If the y terms cancel out, you're left with x = -3.

If x = -3, sub that value in for x in eitheer one of the original equations and solve for y:

[tex]3x-y=5[/tex] becomes

[tex]3(-3)-y=5[/tex] and

[tex]-9-y=5[/tex] so

[tex]y=-14[/tex]

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