3x≤-6
x=-2
mark it on the x axis and then shade to the left
Solve each system of equations by writing a new system that eliminates one of the variables.
1 answer:
Answer:
Step-by-step explanation:
Let:
We need to eliminate one of the variables, so let's use elimination method. First multiply (1) by 4 and (2) by 3:
Now subtract 3*(2) from 4*(1) in order to eliminate x:
Solving for y:
Multiplying both sides by -1/13
Finally, replacing the value of y in (1)
Solving for x:
add 2 to both sides:
Multiply both sides by 1/3:
You might be interested in
Answer: undefined in both cases.
Explanation:
1) Expression to evaluate:
2) You are asked to evaluate that expression for two different cases, x = 0 and x = 3.
3) First case: x = 0
The expression cannot be evaluated at x = 0, because the denominators (both denominators) equal 0, and the division by 0 is not defined.
So, the answer is undefined.
4) Second case, x = 3
When you replace x = 3 you get:
Again, this result in a division by 0, so you conclude that it is undefined too.
Explanation:
1) Expression to evaluate:
2) You are asked to evaluate that expression for two different cases, x = 0 and x = 3.
3) First case: x = 0
The expression cannot be evaluated at x = 0, because the denominators (both denominators) equal 0, and the division by 0 is not defined.
So, the answer is undefined.
4) Second case, x = 3
When you replace x = 3 you get:
Again, this result in a division by 0, so you conclude that it is undefined too.