7(x – 3) – 5(2x - 4) = 5
2 answers:
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Answer:
• For parallel line, their gradients are the same:
→ m = ⅓
• From general equation of a line;
• For the point (9, -1):
therefore:
Answer:
A. a parabola that opens down.
Step-by-step explanation:
First we can eliminate two answers, b and d, since parabalas that open left or right use the y variable.
Now the equation of a standard parabola is x². This means that there are no negative y values, and therefore it cannot open down, it is up.
With a NEGATIVE coefficient, the graph is flipped over the x axis, therefore making it open down.
Graphical proof is attached for further understanding, positive a is in red, negative a is in blue.
