Solve each system by substitution.
y=-4x-9 y=3x+19
1 answer:
Answer:
x=-4, y=7
Step-by-step explanation:
According to the first equation, y = -4x - 9, so we can substitute y in the second equation for -4x - 9.
y = 3x + 19
-4x - 9 = 3x + 19
Add 9 to both sides
-4x = 3x + 28
Subtract 3x
-7x = 28
Divide by -7
x = -4
Plugging this into the equation, we have:
y = -4x - 9
y = -4(-4) - 9
y = 16 - 9
y = 7
You might be interested in
A normal distribution is symmetrical about the mean. Therefore half of all young men are shorter than 68 inches.
Answer:
m<32
Step-by-step explanation:
Sorry could you elaborate a bit further on the question