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d

Step-by-step explanation:

D;  y = x

Step-by-step explanation:

1. Slope-intercept form

The general formula of a line is;

y = mx + b

Where "m" is the slope, and "b" is the y-intercept.

2. Slope

The slope of a line is;

The slope of the given line is; . This is because the line goes up 4 units, and over to the right by 7 units.

3. Intercept

This line passes through the origin, meaning it has no y-intercept.

4. Putting it together

Substitute in the value found, into the general equation.

y - mx + b

m =

b = 0

Hence the equation of the line is;

4.0 ft

step-by-step explanation:

4.0 ft