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Sliva [168]
4 years ago
6

What is the answer to y=6+4x and y=-5x-21

Mathematics
2 answers:
kodGreya [7K]4 years ago
4 0
Y=4x+6
y=-5x-21

4x+6=-5x-21
add both sides by 5x
also subtract both sides  by 6
9x=-27
x=-3

plu x=-3 in y=6+4x
y=6-12
y=-6
lina2011 [118]4 years ago
4 0

y=6+4x

 <span> y=-5x-21</span>

<span>=> 6+4x=-5x-21</span>

<span>9x=-27</span>

<span>x=-3</span>

<span><em>y=6+4*(-3)=6-12=-6</em></span>

<span>y=-6</span>

<span><em>Solution: (-3; -6)</em>
</span>

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