1.2 minutes per hours is the correct answer
4 * (25 * 1.2) = (4 * 25) * 1.2
Here the line passes through (0,0) and (1,3).
First we need to find the slope , and for that we need to use the following formula
On substituting the values from the point, we will get
Now we will use slope intercept form, which is
Where m is the slope and b is the y intercept
And on substituting the values of x and y from the point (1,3) and slope, m = 3, we will get
b =0
Substituting the values of m and b in the slope intercept form, we will get
Simplify the right hand side:
Expand the left hand side:
Subtract 2x from both sides:
Divide both sides by 4: