You are a partner in your group with their problem. what mistake did they make solving the system?
3x+y-9
-2x+y=4

students work when solving the second equation for y:
y=2x+4
-2x+(2x+4)=4
-2x+2x+4=4
4=4

the students response is there are indefinitely many solutions and this is not correct. explain the mistake.

arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation:

a

step-by-step explanation:

strong negative correlation

a

step-by-step explanation:

the denominator cannot be the same as one of the factors.

8 denominator times 2 denominator = 16

and 7 numerator time 11 = 77

77/16= 77/16 ( they cannot be further simplified)