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anyanavicka [17]
3 years ago
12

Y=1/2x-3 and 9x-2y=-74 substitution

Mathematics
2 answers:
Marina86 [1]3 years ago
6 0
Hello : 
<span>Y=1/2x-3  ...(1)
 and
9x-2y=-74....(2)
subsct in (2)  :
9x-2(1/2x-3) = -74
9x-x+6 = -74
8x =-80
x = -10
in(1) : y =1/2(-10)-3
          y = -8</span>
Luba_88 [7]3 years ago
5 0
<span><span><span><span><span><span>x</span><span>=</span><span>2</span><span>(</span><span>y</span><span>+</span><span>3</span><span>)</span></span></span></span></span></span><span>x=<span><span>​9</span>​<span>​<span>2(y−37)</span></span><span>​​</span>
</span></span><span><span>
</span></span>
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