Answer:
B) y = -5x + 7
Step-by-step explanation:
Pick 2 points on the line: (10, 5) and (15, 4)
slope = change in y ÷ change in x = (15 - 10) ÷ (4 - 5) = -5
from inspection, the y-intercept is (0, 7)
Therefore, using slope-intercept formula: y = mx + b
(where m is the slope and b is the y-intercept)
y = -5x + 7
