Find the equation of the line parallel to the graph of 7x-3y=21 that has an x-intercept of - 1.

To start this, you would have to get y by itself to have an equation you can graph. Start by subtracting 7x from both sides.

-3y = - 7x+21

Next, divide both sides by - 3

y = 7/3x + 7

A parallel line would have the same slope of 7/3x. Since you need to have an intercept of - 1 the equation would be y = 7/3x - 1