Determine a relationship between the x- and y-values. Write an equation.
Х
1
-3
2
-8
у
3 4
-18
13

Answer:y = y = -5x + 2
Explanation:
Y = (y2-y1)(x2-x1) x + b = mx + b (b is the y-intercept)
= (-8+3)/(2-1)x + b = -5x + b
to find b
when x = 0, y=b = 2
(could draw graph to make clear)
this is a straight line: the slope shows that for any x0, y1 = y0 - 5