Hi,
1. Remember, an ordered pair is an x value and a y value that when substitute into an equation, the equation becomes true.
Example X +Y = 10. if x= 3 and y = 7, that would be a true equation and our ordered pair would be (3,7). <---- Also remember an ordered pair is always (x value, y value)
Your question is already giving you a y value of 3 and wants to know, if you substitute it in place of y, what does x have to be to make it true. (Hint it will be negative in this particular problem)
x + 4(3) = 7, Find x.
2. Make up an equation where if you substitute -8 in the x place and 0 in the y place the equation is true. The trick is that you can make the number on the right side of the equation the correct value after you set up the left side.
Example: First set up the left side : 5x + 2y = then plug in -8 and 0 to the proper spots and see the outcome. 5(-8) + 2(0) = -40. Then put your left side with the right side value, but use the x and y not the -8 and 0. 5x + 2y = -40. <-------1 equation, now find 2 more!
