math
posted by Megan .
(4,2) and (2,8) lie on the line Ax2By = 28. What is the value of A?
SOMEONE PLEASE HELP ME!!
THANK YOU SOOOO MUCH!
4,2) and (2,8) lie on the line Ax2By = 28. What is the value of A?
Put the points in. First one.
A42B(2)=28
4A+4B=28
A+B=7 call this equation 1)
second point:
A22B(8)=28
2A+16B=28
A+8B=14 call this equation 2)
Now you have two equations...
A+B=7
A+8B=14
Now solve for A and B by any number of methods.
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