Mathematics
Grade 9
15 min
Write direct variation equations
Write direct variation equations
Tutorial Preview
1
y varies directly as x. If y = 10 when x = 2, write the equation.
2
y varies directly as x. If y = 12 when x = 4, what is y when x = 7?
3
y varies directly as x. If y = 15 when x = 3, what is x when y = 25?
Sample Practice Questions
Easy
y varies directly as x. If y = 6 when x = 2, write the equation.
0.y = 3x
1.y = 12x
2.y = x + 4
3.x = 3y
Easy
y varies directly as x. If y = 8 when x = 4, write the equation.
0.y = 0.5x
1.y = 2x
2.y = 32x
3.y = x + 4
Easy
y varies directly as x. If y = 10 when x = 5, what is y when x = 3?
0.5
1.6
2.15
3.8
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