Use the percent equation to answer the question what percent of 58 is 8.7

First, make a proportion.

8.7/58=x/100

Cross multiply. 8.7 multiplied by 100 is 870. Then divide 870 by 58. That gives you 15.
The answer is 15%

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.