if and x equal -18 find y
-18 * 1/3 = -6
If y(x) = 1/3x, y(-18) = 1/[3(-18)] = -1/54.
y varies directly as x y=kx, where k is a constant y=18 when x=3 18=3k k=6 y=6x
57
(3,21)
In division, to find what equals 18, you can set up the equation ( x \div y = 18 ). For example, if ( y = 1 ), then ( x ) must be 18 (since ( 18 \div 1 = 18 )). Alternatively, if ( y = 2 ), then ( x ) would be 36 (because ( 36 \div 2 = 18 )). There are infinitely many pairs of numbers that satisfy this equation.
If y(x) = 1/3x, y(-18) = 1/[3(-18)] = -1/54.
3
y varies directly as x y=kx, where k is a constant y=18 when x=3 18=3k k=6 y=6x
y = 6 x 3.5; If you can't do that in your head, split it up: 6 x 3 = 18, 6 x .5 = 3, 18 + 3 = 21
y = -5
x=-1.5
57
40
(3,21)
In division, to find what equals 18, you can set up the equation ( x \div y = 18 ). For example, if ( y = 1 ), then ( x ) must be 18 (since ( 18 \div 1 = 18 )). Alternatively, if ( y = 2 ), then ( x ) would be 36 (because ( 36 \div 2 = 18 )). There are infinitely many pairs of numbers that satisfy this equation.
x2 / y = (6)2 /2 = 36/2 = 18
if y=1/4x and x=,find y