ACT Math › How to find out when an equation has no solution
Solve the following equation for :
No solution
Infinite solutions
In order to solve for , we must get
by itself on one side of the equation.
First, we can distribute the on the left side of the equal sign and the
on the right side.
When we try to get by itself, the
terms on each side of the equation cancel out, leaving us with:
We know this is an untrue statement, so there is no solution to this equation.
There is no solution
3
–3
1
–1/2
Solve for
.
No solutions.
Cross multiplying leaves , which is not possible.
Solve:
No Solution
Infinitely Many Solutions
First, distribute the to the terms inside the parentheses.
Add 6x to both sides.
This is false for any value of . Thus, there is no solution.
Given the following system, find the solution:
x = y – 2
2x – 2y = 2
(1, 1)
no solution
(0, 0)
(1, 2)
(0, 1)
When 2 equations in a system have the same slopes, they will either have no solution or infinite solutions. Since the y-intercepts are not the same, there is no solution to this system.
Solve .
No solutions
By definition, the absolute value of an expression can never be less than 0. Therefore, there are no solutions to the above expression.
Find the solution to the following equation if x = 3:
y = (4x2 - 2)/(9 - x2)
0
6
3
no possible solution
Substituting 3 in for x, you will get 0 in the denominator of the fraction. It is not possible to have 0 be the denominator for a fraction so there is no possible solution to this equation.
None of the other answers
A fraction is considered undefined when the denominator equals 0. Set the denominator equal to zero and solve for the variable.
I. x = 0
II. x = –1
III. x = 1
I only
II only
III only
II and III only
I, II, and III
Solve for :
No solution
Infinite Solutions
Like other "solve for x" problems, to begin it, the goal is to get x by itself on one side of the equals sign. In this problem, before doing so, the imaginary -1 in front of (-27x+27) must be distributed.
Once this is done, you may start to try to get x by itself.
However, when subtracting 27x from either side and doing the same on the other, the 27x term cancels out. As a result, the equation becomes:
We know this is an untrue statement because these numbers are 5 spaces away from each other on the number line. The final answer is No Solution.