PrincesaChrissy6366
16.06.2020 •
Mathematics
On a coordinate plane, line A B goes through (negative 2, 4) and (2, negative 8). Point C is at (6, 4). Which point on the y-axis lies on the line that passes through point C and is perpendicular to line AB? (–6, 0) (0, –6) (0, 2) (2, 0)On a coordinate plane, line A B goes through (negative 2, 4) and (2, negative 8). Point C is at (6, 4). Which point on the y-axis lies on the line that passes through point C and is perpendicular to line AB? (–6, 0) (0, –6) (0, 2) (2, 0)
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Ответ:
B) She is incorrect because when substituting 2 for m the result was a false statement.
Step-by-step explanation:
Let's solve it for ourselves and see if Mia is correct:
7.8+2(0.75m+0.4)=-6.4m+4(0.5m-0.8)
7.8+1.5m+0.8=-6.4m+2m-3.2
1.5m+8.6=-4.4m-3.2
8.6=-5.9m-3.2
11.8=-5.9m
-2=m
m=-2
Since the answer is actually m=-2, Mia's guess is incorrect because plugging in m=2 does not make both sides equal. Therefore B is the correct option.