Standard form is Ax +By =c
y = -4/5 x -7
multiply by 5
5y = -4x -35
add 4x to each side
4x +5y = -35
multiply by -1
-4x -5y = 35
Choice D
in simplest form is
.
Because:
Divide the numerator (2) and denominator (50) by 2. Hope this helps!
Multiply the first equation by -2 to eliminate a variable so it becomes:
-12x+8y=48
4x-8y=-32
Add them together.
-8x=16
x=-2
Plug it in one equation.
6(2)-4y=-24
12-4y=-24
-4y=-12
y=3
Ordered pair is: (-2,3)