The true statements about the equation y = 1.4x are
- (a) The equation represents a proportional relationship
- (b) The unit rate of y with respects to x is 1.4
- (d) A change of 2 units in x results in a change of 2.8 units in y
What are linear equations?
Linear equations are equations that have constant average rates of change. Note that the constant average rates of change can also be regarded as the slope or the gradient
How to determine the true statements?
The equation is given as:
y = 1.4x
The above equation is a proportional linear equation.
This is so because proportional linear equations are represented as;
y = mx
Where m represents the unit rate of change
So, we have:
m = 1.4
Rewrite as:
m = 14/10
Simplify
m = 7/5
When x = 2, we have:
y = 1.4 * 2
Evaluate
y = 2.8
Hence, the true statements about the equation y = 1.4x are (a), (b) and (d)
Read more about linear equations at:
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