1) you can get the equation y = 4x – 3 using the points (-1, -7)and(2, 5)
The slop is positive
2) y = 4x – 3 (the slop is positive)
Answer is "D"
Set 6 Q27
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josephcho77
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the equation of a line is given by y=mx+c, over here m is the slope and c is the y intercept ..arocks wrote:I understand statement B. Could you elaborate stmt. A. How did you get the equation? Does the line pass through origin - how do we know?
Tnx.
the given line passes thru the points (-1, -7) and (2, 5)
So we have 2 equations ,
for (-1, -7) we have -7= -1*m+c and
for (2, 5) we have 5 = 2m +c
... solve the 2 linear equations simultaneously to get values of m and c .. hope that helps ..
