Question

Consider the formula for the slope between two coordinate points, m, shown below. Which of the following equations is equivalent to the slope formula? A.x2 = m(y2 - y1)+x1 B. x1 = m(y2-y1)+x2 C. y2 = m(x2-x1)+y1 D. y1 = m(x2-x1) +y2

Answer 1

Answer:

If we know the coordinates of two points – (x1, y1) and (x2, y2) – along a line, we can calculate its slope and its y-intercept from them. The slope, m, is the change in y ( y, or y2 - y1), divided by the change in x ( x, or x2 - x1).