y=31-5x.
Consider the system of equations.
5x+y=31,
-3x+4y=-37
Take y and substitute it into the second equation. Solve for x and y. Enter your answer as an ordered pair (x, y)
+2095
y=31-5x.
Consider the system of equations.
5x+y=31,
-3x+4y=-37
Take y and substitute it into the second equation. Solve for x and y. Enter your answer as an ordered pair (x, y)
5x + y = 31 ——>> y = 31 – 5x (equation 1)
–3x + 4y = –37 (equation 2)
sub 31–5x for y in (eq 2) – 3x + [ 4 • (31 – 5x) ] = – 37
– 3x + 124 – 20x = – 37
– 23x = – 161
x = +7
sub 7 for x in (eq 1) (5)(7) + y = 31
35 + y = 31
y = – 4
not so weird after all
check answer
sub 7 for x and –4 for y 5x + y = 31 –3x + 4y = –37
35 – 4 = 31 –21 – 16 = –37
31 = 31 –37 = –37
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