Answer:
y=-7x-30
Step-by-step explanation:
y-y1=m(x-x1)
y-5=-7(x-(-5))
y-5=-7(x+5)
y=-7x-35+5
y=-7x-30
Answer:
312
To find the number that is 80% of 390, multiply 390 by 80%.
80% = 0.8.
390 * 0.8 = 312
Answer:
no solutions
Step-by-step explanation:
x + 2y = 1
y = − 1/ 2 x + 4
Substitute the second equation into the first
x + 2(-1/2x+4) = 1
Distribute
x -x +8 = 1
Combine like terms
8=1
This is never true so there are no solutions
Answer:
x = +-12
Step-by-step explanation:
x^2 -144 =0
(x-12) (x+12) =0
using the zero product property
x-12=0 x+12 =0
x=12 x=-12