Joaquin took a quiz worth 45 points. He earned 40 points. What was his score
2 answers:
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Answer:
see below
Step-by-step explanation:
When a line goes through the origin, it expresses a proportional relationship such that for every point on the line ...
y/x = constant
The graph shows points (-5, 4) and (5, -4) as being on the line. So, we can determine the constant to be ...
constant = (y-value)/(x-value) = -4/5 . . . . . using point K
Then the proportion can be written as ...
y/x = -4/5
Multiplying both sides of this equation by -1 lets us also write the same relation as ...
-y/x = 4/5 . . . . matches the 2nd answer choice
