E4leannaAnaBilburke E4leannaAnaBilburke

26-04-2017
Mathematics

contestada

This system has one solution.

y=5x−9
{
y=x^2 −3x+7

What is the y-coordinate of the solution?

Enter your answer in the box.
y =

Respuesta :

ghanami ghanami

29-04-2017

Δhello :
y=5x−9...(1)

y=x² −3x+7....(2)
x²-3x+7 = 5x-9
x²-8x+16 = 0
Δ =(-8)²-4(1)(16) =0
x1=x2=8/2=4
in(1) :y =5(4)-9 =11

Enter your answer in the box.
y = 11

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