Answer: Assuming it means slope-intercept, the answer would be y=-2x+9
A=1 b=8 c=8
h = [-8 +-sq root(64 - 4*1*8)] / 2
h = [-8 +-sq root(32)] / 2
h1 = -4 +
<span>
<span>
<span>
2.8284271247
</span>
</span>
</span>
h1 =
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<span>
<span>
-1.1715728753
</span>
</span>
</span>
h2 = -4 -
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<span>
2.8284271247
</span></span>h2 = -<span> 6.8284271247
</span>
First you need to combine like terms
13x+8-15x=6+x+11
-2x+8=x+17
-x -8 -x -8
-3x=9
--- ----
-3 -3
x=-3
I hope I've helped!