If a is the x-intercept, b is the y-intercept, and m is the slope of the line with equation x/4 + y/18 = 1, then what is the value of a + b + m?
x/4 + y/18 = 1
If a is the x intercept then y = 0 so
x /4 = 1
x = 4*1 = 4
If b is the y int, then x= 0 so
y/18 = 1
y = 18
Slope = [ 18 - 0 ] [ 0 - 4 ] = - 18 / 4 = -9 / 2 = -4.5
a + b + m =
4 + 18 - 4.5 = 17.5