Answer:
2x + 3y = 10
3y = 18
Explanation:
Given equations:
- 2x + 3y = 10
- 4x = 16
- 2x - 3 = 14
- 3y = 18
- 14.6 = 2x
A function is a special type of relationship where each input (x-value) is related to exactly one output (y-value).
The given equations are all linear equations since the highest power of each variable is one.
A linear equation with only a x-variable is a vertical line: x = a.
A linear equation with only a y-variable is a horizonal line: y = a.
A vertical line is not a function as it has only one x-value yet infinite y-values, so each input is related to infinite outputs.
A horizontal line is a function as each x-value is related to one y-value, (albeit the same y-value).
Therefore, all the given equations are functions except the equations that contain only a variable in x.
Therefore, the equations that represent functions are: