What is a linear equation?



Sagot :

a polynomial equation of the first degree, such as x + y = 7

The graph of such an equation is a straight line if there are two variables.
Evaluation of linear equation.
f(x)=3x+1
f(2)=3(2)+1
    =6+1
    =f(2),7
    =2,7
2,7 is a ordered pair and the answer always ordered pair.
this equation have unkwn and the given, the given is f(x)=3x+1 then multiply the f(2)=3(2)+1= 6 and you have remain +1 then add.
at last take the given no. which is f(2) or 2 and paired to the no. you add which is 7=2,7 the final answered