Answer:
y = -2x + 15
Step-by-step explanation:
let eqn be y = mx + b
since parallel, they have same slope/gradient
hence, m = -2
sub m = -2 and (4, 7):
7 = -2(4) + b
b = 15
therefore eqn is y = -2x + 15
Topic: Coordinate Geometry
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