A line can be represented in the slope-intercept form y = mx + b, where m is the slope and b is the y-intercept.
Given that m = −72 and the y-intercept is 12, we can represent the line as y = −72x + 12
We are also given that the point (x, 5) lies on the line. So we can substitute the x and y values of the point into the equation of the line to find the value of x.
y = −72x + 12
5 = −72x + 12
-7 = -72x
x = 7/72
So the value of x is 7/72.
We can also get this by solving the equation of the line for x.
y = -72x + 12
y - 12 = -72x
(y - 12)/-72 = x
x = (y - 12)/-72
So for any point (x, y) on the line, the value of x can be obtained by substituting y and the slope-intercept form equation.