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Sagot :

Step-by-step explanation:

1. for (-1, -3)

check: -y = 4x + 7

-(-3) = 4(-1) + 7

3 = -4 + 7

3 = 3

Therefore, (-1, -3) is a solution to -y = 4x + 7

for (2, 15)

check: -y = 4x + 7

-15 = 4(2) + 7

-15 = 8 + 7

-15 = 15

Therefore, (2, 15) is NOT a solution to

-y = 4x + 7

for (0, 7)

check: -y = 4x + 7

-7 = 4(0) + 7

-7 = 0 + 7

-7 = 7

Therefore, (0, 7) is NOT a solution to

-y = 4x + 7

Answer:

(-1, -3) is a solution to -y = 4x + 7 but (2, 15) and

(0, 7) are NOT.

3. The graph overlap, this means that they intersect at all the points on the graph of x = 4 and y = -2

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