Mr. johnson is driving at 90 kilometers per hour. The speed limit is 60 miles per hour. If 1 kilometer equals 0.62 miles, is Mr. Johnson speeding? Explain your answer.

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.