What is 1 2/5 minus 3/8 equal in simplest form

1 2/5 is 7/5
7/5 - 3/8 = 35/40 - 15/40 = 20/40 = 1/2

Where m is the slope of the line and b is the y-intercept of the line, or the y-coordinate of the point at which the line crosses the y-axis. to write an equation in slope-intercept form, given a graph of that equation, pick two points on the line and use them to find the slope. this is the value of m in the equation.