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22-05-2017
Mathematics

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Solve using substitution or elimination.

y=-x²+7
y-2x=4

WILL GIVE BRAINIEST TO WHO EVER HELPS ME SOLVE THIS.

Respuesta :

MathisLif3 MathisLif3

22-05-2017

essentially, the solutions will be where the two equations intersect.
y=-x^2+7
y=2x+4

2x+4=-x^2+7.
2x=-x^2+3.
x (x+2)-3=0
quadratic formula=> x=1,-3
(1,6) and (-3,-2) are the solutions to the intercepts

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