SOLUTION: Please write an equation for each line,express it in the standard for ax+by=c. 1.(-3,4) (2,4) 2.with m=-3 and through (4,6) 3. Through (0,4) and (-1,0) 4. Parrallel to x+4=0 wi

Algebra ->  Linear-equations -> SOLUTION: Please write an equation for each line,express it in the standard for ax+by=c. 1.(-3,4) (2,4) 2.with m=-3 and through (4,6) 3. Through (0,4) and (-1,0) 4. Parrallel to x+4=0 wi      Log On


   



Question 167321: Please write an equation for each line,express it in the standard for ax+by=c.
1.(-3,4) (2,4)
2.with m=-3 and through (4,6)
3. Through (0,4) and (-1,0)
4. Parrallel to x+4=0 with x-intercept (-9,0)

Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
A. slope = change in y/change in x m=4-4/2+3=0
so y-4=(0)(x-2) y=4 or highlight%280x%2B1y=4%29
B. using point slope form:y-6=-3(x-4)---> y-6=-3x+12--->highlight%283x%2By=18%29
:
C. slope (0-4)/(-1-0)=4--> y-4=4(x-0)---> y-4=4x--->highlight%284x%2By=4%29
:
D.x=-4 is a horizontal line where x=-4 for any y value
a line parallel to this through (-9,0) will also be a horizontal line where x
= -9 for all y values. and would be written as highlight%28x=-9%29