Answer:
y = 2x - 23 is the equation of the graph.
Step-by-step explanation:
The slope = (-7 - (-9) / ( 8 - 7)
= 2 / 1
= 2.
General form is y = mx + b
m = slope = 2 and the point (7, -9) lies on the line so:
-9 = 2(7) + b
b = -9 - 14 = -23.
So the equation of the graph is y = 2x - 23.
