Question

How do you find the value of \[5x+6\] when \[x=-2\]?

Answer 1

Hint: To find the value of \[5x+6\] when \[x=-2\] we have to put the value of \[x\] in the given equation.
So, let’s find out what is the meaning of the given question.
We know that \[5x+6\] is a linear equation may be it is a equation at speed or maybe it is a equation of straight line we cannot say what it is because it is not mentioned in the question and \[x=-2\] is the point at which equation has some value we known that if you have any equation and you want to plot a graph at that equation you take some set at points at either on \[x-\] axis or \[y-\] axis and you find the corresponding values at other and then you join that points and you end up getting graph at that equation.

Complete step by step solution:
Given equation is \[5x+6\] and we have to find its value when \[x=-2\].
We have to rewrite this equation
As
\[\Rightarrow \] \[y=5x+6\]
Now put the value of \[x=-2\] in the above equation.
\[\Rightarrow \] \[y=5\left( -2 \right)+6\]
Taking negative signs out of the bracket.
\[\Rightarrow \] \[y=-5\left( 2 \right)+6\]
Meaning of brackets is multiplication.
and \[5\times 2\] is \[10\].
\[\Rightarrow \] \[y=-10+6\]
Here the \[10\] is bigger than \[6\]. So the answer which will come out will have the sign as the number \[10\].
\[\therefore y=-4\]

The value of \[5x+6\] is \[-4\].

Note: When solving these types of equations, always assume variables equal to equations will make the problem less confusing.
When solving addition and subtraction make sure to provide the correct sign to the final answer.