No. It's ANY equation that when you put it on a graph, the graph is a straight line.
That almost always means
Y = Ax + B or Ax + By = C
with A, B, and C, being <u><em>any </em></u>numbers.
Another thing it means is that the x and the y are never squared or any other power ... only the 1st power ... and they're never in a denominator of a fraction.
Slope of line l (m1)=5
Slope of line w(m2)=-1/5
Since,m1×m2=-1 , line 'l' and 'w' are perpendicular.
Since line 'k' doesn't intersect line 'l' ,they must be parallel b'coz they are in the same plane as well.
Here, 'l' is perpendicular to 'w' and parallel to 'k'....so w and k must be perpendicular to each other.
It can be proven:
Since l and k are parallel, their slopes are equal.
So, slope of k (m3)=5
Since m3×m2=-1 ,w and k are perpendicular.
Hence, angle between w and k is 90°
This is an inverse function. First set up ur equation. 4/6= X/15. Next, solve for x with cross multiplication. 6x = 60. X = 60
Cannot see the picture cleary
