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gizmo_the_mogwai [7]
3 years ago
8

Use a graphing calculator to solve the system of linear equations. 2.1x+4.2y=14.7 −5.7x−1.9y=−11.4

Mathematics
1 answer:
tia_tia [17]3 years ago
3 0

I used my calculator and got x=1 y=3

solve for y to put them in your calculator

2.1x+4.2y=14.7

y = (14.7 -2.1x)/4.2


−5.7x−1.9y=−11.4

y=(-11.4 +5.7x)/(-1.9)

then using the ploting tool I plotted them and found where they intersected

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We can eliminate the first and the last proposal because

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