SOLUTION: Slope= -1; through (3,5) (-4,10) and (-6,15) Y= -3/5x + 3 X- 4y = -4 I need help with trying to solve these four problems

Algebra ->  College  -> Linear Algebra -> SOLUTION: Slope= -1; through (3,5) (-4,10) and (-6,15) Y= -3/5x + 3 X- 4y = -4 I need help with trying to solve these four problems       Log On


   



Question 657284: Slope= -1; through (3,5)
(-4,10) and (-6,15)
Y= -3/5x + 3
X- 4y = -4
I need help with trying to solve these four problems

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Slope= -1; through (3,5)
----
y = mx + b
Solve for "b":
5 = -1(3) + b
b = 8
Equation:
y = -x + 8
=====================
(-4,10) and (-6,15)
slope = (15-10)/(-6--4) = 5/-2
y = mx + b
Solve for "b":
10 = (-5/2)(-4) + b
10 = 10 + b
b = 0
y = (-5/2)x
=========================
Y= -3/5x + 3
=======================
X- 4y = -4
4y = x + 4
y = (1/4)x + 1
========================
Cheers,
Stan H.
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