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What is the inverse of y equals 4x-2?
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What is the inverse operation multiplying by 25?
The inverse of multiplication is division. y = 25x Substitute y for x and x for y to determine the inverse: x = 25y y = x/25
Suppose that y varies with x Write an equation for the inverse variation y 4 when x 7?
If y varies with x, then there cannot be an inverse variation between x and y!
If y varies inversely with x and y equals 5 when x equals 7what is the value of y when x equals 4?
If we assume a constant inverse relationship then we can start with the equation y = c/x where c is the constant of proportionality. Plugging in the known values of x = 7 and y = 5 we determine that c = 35. We now have the equation of y = 35/x. Plugging in 4 for x we see that y = 35/4 = 8.75.
What is the additive inverse of x - y?
Oh, honey, the additive inverse of x - y is simply -x + y. It's like flipping a pancake - one side is positive, the other is negative. So, if you're looking to cancel out that x - y, just throw in a -x + y and call it a day.
