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3 years ago

What is 9minus w = to

Mathematics

2 answers:

skad [1K]3 years ago

7 0

9 - w = 2

9 - 7 = 2

If this is what you mean.

Nataly [62]3 years ago

3 0

9-w would be the simpliest form.

But, if you meant, to= 2, then:

9-w= 2

Subtract 9 on both sides.

-w= -7

Divide by -1, since the w cannot be negative.

w= 7

We can check this by plugging it in.

9-(7)= 2
2=2 <- this works

I hope this helps! Let me know if I need to make any changes.
~kaikers

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To find b, think about what your (x,y) points mean:

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Now, look at our line's equation so far: $y=-\frac{2}{5}x + b$ . $b$ is what we want, the - $-\frac{2}{5}$ is already set and x and y are just two 'free variables' sitting there. We can plug anything we want in for x and y here, but we want the equation for the line that specfically passes through the two points (-3,1) and (2,-1).

So, why not plug in for x and y from one of our (x,y) points that we know the line passes through? This will allow us to solve for b for the particular line that passes through the two points you gave!

You can use either (x,y) point you want. The answer will be the same:

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(2,-1). y = mx + b or $-1=-\frac{2}{5} * 2 + b$ , or solving for b: $b = 1-(-\frac{2}{5})(2)$ . $b = -\frac{1}{5}$ .