DEFG is a Rhombus. G has the coordinates( 9, 1)
The equation of diagonal DF is y = 1/2x - 1

Find an equation of the diagonal EG.
Give your answer in the form of y = ax + b

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax

Ineed with question three. i don't understand how i'm supposed to achieve 3 marks.

Solve the equation for y. -1 = 1/3y + 11. will give 5 stars if answered correctly!