Solution to the System of linear equations below : 2x+y=-3 3x+2y=-7

1 answer:

4 0

You can solve this by adding 3 to 2x+y=-3 so it is now 2x+y+3=0, then you can subtract y to get 2x+3=-y, multiply by -1 to get y positive so you have -2x-3=y, then insert that to the second equation as 3x+2(-2x-3)=-7 you can then multiply it out to 3x-4x-6=-7, add 6 to both sides to get 3x-4x=-1, which is the same as -x=-1 or x=1, then insert they into the upper equation to get 2+y=-3, subtract 2 and you have y=-5, so the answers are x=1 and y=-5

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What are the slope and y-intercept for the graph of y – 3x = -1?

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Answer:

Slope (m) = 3, y-intercept (b) = -1

Step-by-step explanation:

First, we need to write the equation in y = mx + b.

To do this, add 3x to both sides.

y = 3x - 1 is your result.

Now, we have everything we need to do determine our slope and y-intercept in just this equation alone.

Remember, m = slope and b = y-intercept.

In this equation: