How to work -1x-2y=-13 x-2y=11 equation by substitution

1 answer:

5 0

Well if you're wanting to use substitution, you first have to end up with one term on either side of the equation. Use the second one as it's easiest.

So: x-2y=11, so find -2y as there is a -2y in the first equation.
then that becomes -2y=11-x. then sub that into equation 1, and you get:

-x+11-x=-13, which equals to -2x+11=-13, which is -2x=-24, so therefore

x=12. then chuck the x into any of the equations to find what y equals.

hope this helps!

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Determine the constant rate of change (slope) of the linear function. A high school basketball team notices that attendance at i

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Answer:

The change in the people attending per game is 14.7 times as great as the change in the number of lost games.

This mean every game is lost, 14.7 less people (as the slope is negative) attend the next game.

Step-by-step explanation:

To calculate the slope, we need to relate two points of the function.

The slope $m$ of the function $y=m*x+b$ can be calculated as