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How do you find slope when only one x and y values are given?
Add x and y then Divide by the postulate, subtract 7, add 13, then divide by 3.
Why does the sign in an inequality change when you divide by a negative?
Let's try an example: 2 < 4 divide both sides by -2 and you get: -1 < -2 which is clearly false. Another example: -4 < -2 divide both sides by -2 and you get: 2 < 1 which is again false. Here is a simple proof: Assume x < y Then subtract y from both sides: x - y < 0 Now subtract x from both sides: -y < -x which is the same is -x > -y Summarizing: x < y implies that -x > -y.
What two numbers add up to 18 and subtract to 4?
Let's denote the two numbers as x and y. We can set up a system of equations: x + y = 18 and x - y = 4. By solving this system simultaneously, we can find that x = 11 and y = 7. Therefore, the two numbers that add up to 18 and subtract to 4 are 11 and 7.
What two numbers equal 33 when you add them and 9 when you subtract them?
42
How do you solve x equals y plus 2 divided by y-3 for y?
-1
