3x+4y=12;(-4,7) write an equation for the line that passes through the given point and is parallel to the graph of the given equation write in slope intercept form

Pls! does anybody know a shortcut for answering these types of questions in the future?

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with