Answer:
This system has infinite solutions and it would be much easier to solve it by elimination but substitution it is.
Step-by-step explanation:
-3x+3y=9
-x+y=3
Isolate either x or y in any of the equations. I'll go with the second.
y = 3+x
Now substitute this for y in the first equation.
-3x+3(3+x)=9
Distribute the 3
-3x+9+3x=9
Combine like terms:
9=9
0=0
It's infinite
Answer:
your answer is 14/15.
you get that by deciding on the least common multiple, which is 15, then you adjust the fractions so you can add them together.
Answer:
y=b-a/x
Step-by-step explanation:
yx+a=b
-a
yx=b-a/x
Answer:
Divide both sides by-2
Use the distributive property
Step-by-step explanation:
If you divided both sides by -2, you would get n + 3 = -6.5. Then you would have to subtract 3 from both sides, so n would be -9.5.
However, if you used the distributive property, you would get -2n - 6 = 13. Then you could add 6 to both sides and get -2n = 19. Finally, to solve for n, you would divide both sides by -2 to get n = -9.5.
Hope this helps!
Relations are not just functions but they are also non functions
