Answer:a
a=y
Step-by-step explanation:
Horizontal line (Coordinate Geometry) Definition: A straight line on the coordinate plane where all points on the line have the same y-coordinate. ... A horizontal line is one the goes left-to-right, parallel to the x-axis of the coordinate plane. All points on the line will have the same y-coordinate.
Answer:
To multiply two fractions, just do the following: Multiply the two numerators (top numbers) to get the numerator of the answer; multiply the two denominators (bottom numbers) to get the denominator of the answer.
Answer:
a=126
Step-by-step explanation:
Answer:
See proof below
Step-by-step explanation:
We will use the hint. The statement of the hint holds true, as the linear span of a set of vectors T is equal to the set of linear combinations of vectors in T.
Denote the linear span of vectors with the curly brackets < >, that is, 
Let 
, then u is a linear combination of v1,v2,v3, that is, there exist scalars 
such that 
. Multiply by 3 in both sides to get 
, with 
Since , 
as real numbers are closed under multiplication. Therefore 3u is a linear combination of the vectors 
, that is, 
