Question

Determine the equation of the line that passes through the points (2, -5) and (7, 0). Use the form y = mx + b.

Answer 1

is this a question?

Answer 2

y = 1x - 7

Answer 3

m = slope = rise (delta y) / run (delta x)
m = (0 - -5) / (7 - 2) = 5 / 5 = 1

b = y intercept = value for y when x = 0; can be computed by using one of the know points (I will use (7,0)

0 = 1 * 7 + b
0 = 7 + b
-7 = b

By substitution, y = 1x -7 or y = x -7

Answer 4

ahh, algebra!