Question

Evaluate the expression when x=5 and y=-4. -x+6y

Answer 1

We will investigate how to evaluate the expression given in terms of variables as follows:

$-x\text{ + 6y}$

The above expression is dependent on two variables namely ( x and y ). To evaluate the above expression we need the values of the two variables given as follows:

$\textcolor{#FF7968}{x}\text{\textcolor{#FF7968}{ = 5 , y = -4}}$

The only step involved in the basic evaluation of expression is to " substitute " the values of respective variables as follows:

$-(\text{ 5 ) + 6}\cdot(\text{ -4 )}$

Then use the basic methematical operation keeping in mind the rule of "PEMDAS" when applying each parameter. We will solve the respective parentheis as follows:

$-5\text{ - 24}$

Apply the basic mathematical operaiton of " subtracttion " as follows:

$\textcolor{#FF7968}{-29}$