The other number is 13. 13 x 7 = 91.
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Answer:
The slope would be -1
Step-by-step explanation:
The reason for this is that parallel lines will always go in the same direction, just from different locations. So in this case, we do not need to find the position of the line r but the slope. If line r's slope was different, they would intersect at some point and it wouldn't be parallel any more.
Answer:
The equation of the axis of symmetry is equal to

Step-by-step explanation:
we have

This is the equation of a vertical parabola written in vertex form open upward (because the leading coefficient is positive)
The vertex represent a minimum
The axis of symmetry is equal to the x-coordinate of the vertex
we have that
The vertex is the point (10,-6)
The x-coordinate of the vertex is 10
therefore
The equation of the axis of symmetry is equal to
