In math class, Emma and Angelle pair as a group. Emma’s task is to graph  (7/2)x−(9/2)=2y  and Angelle’s task is to graph  4y=7x−9 . After they complete their graphs, they compare their work. They both get exactly the same graph. What is the solution of  (7/2)x−(9/2)=2y  and  4y=7x−9 ?

3 answers

To find the solutions for the equations (7/2)x - (9/2) = 2y and 4y = 7x - 9, we can start by rearranging each equation so that they are in slope-intercept form (y = mx + b).

For the first equation:
(7/2)x - (9/2) = 2y
(7/2)x - (9/2) = 2y
2y = (7/2)x - (9/2)
y = (7/4)x - (9/4)

For the second equation:
4y = 7x - 9
y = (7/4)x - (9/4)

As we can see, the two equations have the exact same form, y = (7/4)x - (9/4), indicating that they represent the same line. Therefore, the solution to both equations is any point on this line.
How many solutions do these equations have
Since the two equations represent the same line, they have infinitely many solutions. Any point on the line will satisfy both equations.