What are the values of a1 and r of the geometric series? 2 – 2 + 2 – 2 + 2 a1 = 2 and r = –2 a1 = –2 and r = 2 a1 = –1 and r = 2 a1 = 2 and r = –1

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.