Answer:
Yes, 5x = y is Proportional and, the constant of proportionality is 5
Explanation:
If x and y are proportion, then
- y = k x is the equation of the proportional, where k is the constant of proportionality
- It represented graphically by a line passes through the origin (0, 0)
∵ 5x = y
→ Switch the two sides
∴ y = 5x
→ Check it if passes through the origin point or not
∵ At x = 0, y = 5(0) = 0
∴ (0, 0) is a point ∈ y = 5x
∴ y = 5x represented graphically by a line passes through the origin
∴ x and y are proportion
∴ y = 5x is the equation of proportional
→ By comparing it with the form of the equation above
∴ k = 5