Hi there!
The way that an infinite number of solutions is achieved is when the two equations, when solved together, get an answer which is just a number equal to the same number. To do this, first substitute 6x-b in for y in the second equation.



Now, we see that b needs to be equal to -3 when multiplied by -1/2. When both sides are divided by -1/2, b becomes equal to 6. Thus, b must be 6.
Check work:




Thus, as they are equal to each other, the answer is correct. b = 6.
Hope this helps!
Answer:
85j-6/5j
Step-by-step explanation:
Answer:
For number 2 the answer is X=5,-2
and for number 3 the answer is there is no solution
Answer:
actually which one of thise is th qus in this????
Step-by-step explanation:
please tell
Answer:
6.5 * 10 ^ -9
Step-by-step explanation:
0.0000000065
Scientific notation means a* 10 ^b
where a is number between 1 and less than 10
Move the decimal 9 places to the right which means the power of 10 is negative since we moved the decimal to the right
6.5
The power of 10 is -9
6.5 * 10 ^ -9