Mathematics
Grade 7
15 min
Write equations for proportional relationships
Write equations for proportional relationships
Tutorial Preview
1
A table shows y is 12 when x is 4. Write the equation.
2
5 apples cost $2.50. Write an equation for the cost (c) of 'a' apples.
3
A recipe uses 1/2 cup of sugar for 2 cups of flour. Write an equation for sugar (s) based on flour (f).
Sample Practice Questions
Easy
In a proportional relationship, y is 8 when x is 4. What is the equation?
0.y = 2x
1.y = 4x
2.y = 0.5x
3.y = 8x
Easy
Three movie tickets cost $30. Write an equation for the cost (c) of 't' tickets.
0.c = 3t
1.c = 30t
2.c = 10t
3.c = 90t
Easy
If y is 15 when x is 3, what is the equation for this proportional relationship?
0.y = 3x
1.y = 5x
2.y = 15x
3.y = 45x
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