The point-slope form:

We have two points (-9, 7) and (9, 1). Substitute:

Answer:
(-3.5,-2)
Step-by-step explanation:
Sureeeee brainliest pleasee
Answer:
d
Step-by-step explanation:
Answer:
△ABC is congruent to △DEF
Step-by-step explanation:
△DEF is a reflection of △ABC across the y-axis. (Each x-coordinate is negated.)
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<em>Comment on presentation</em>
This would be much easier to answer if you would use a conventional representation of ordered pairs:
... (-1, -2) instead of "begin ordered pair negative 1 comma negative 2 end ordered pair"