-3x-4y=-2 and y=2x-5. What is y? *
1 answer:
Answer:
Step-by-step explanation:
The easiest way to do this is to solve for x first, then y.
Plug the second equation (y = 2x - 5) into the first equation (-3x - 4y = -2). This will give you -3x - 4(2x - 5) = -2. Solve for x.
-3x - 4(2x - 5) = -2
-3x - 8x + 20 = -2
-11x = -22
x = 2
Now, you can plug in the x-value into the second equation.
y = 2(2) - 5
y = 4 - 5
y = -1
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