(3, -2)
Step-by-step explanation:
y = -2x + 4
-x + 3y = -9
-x + 3 (-2x + 4) = -9
-x + -6x + 12 = -9
-7x = - 9 – 12
-7x = - 21
X = 3
We substitute x with 3 to evaluate y;
-3 + 3y = -9
3y = -6
y = -2
Elimination Method;
y = -2x + 4
-x + 3y = -9
We arrange the equations for substitution;
2x + y = 4
-x + 3y = -9
We multiply the first equation with 3 so we can substract one variable to zero;
3 (2x + y = 4)
= 6x + 3y = 12
Then we subtract the two;
6x + 3y = 12
-x + 3y = -9
7x = 21
x = 3
We evaluate y by substitution x with 3 in one of the equation;
-x + 3y = -9
-3 + 3y = -9
3y = -6
y = -2
The final answer expressed as a coordinate point is;
(3, -2)
Answer: Second option
Explanation: As u can see the fraction is being multiplied 3 times.
Answer:
x= -4.5
x= -9/2
I am confused by what you mean when you say: larger and smaller x
Step-by-step explanation:
2x+16-7=0
2x+9=0
2x=0-9
2x=-9
x=-9/2
x=-4.5
Start by dividing both sides by 5.
This leaves you with y+2/5=-13/5
Subtract 2/5 from both sides to isolate the variable.
y=-15/5 or -3