Linear Equation...

Cost of one apple is 3 times the cost of an orange. Write a linear equation for the statement.

Fill in the blank:
An equation in the form ax + by + c = 0 is called ____________ equation.

If we write $$\displaystyle 3x-7y=10$$ in form of  $$\displaystyle ax+by+c=0,$$ then $$c=$$?

Which of the following is a linear equation?

Cost of one apple is 3 times the cost of an orange. This is an example of linear equation in ..... variables.

The cost of a notebook $$(y)$$ is twice that of a pen $$(x)$$.
Write a linear equation to represent this statement.

In the given equation
$$\displaystyle a=\frac { 2 }{ 3 } b+5$$
It is linear equation in ....... variables.