X - 2y = 6
3x + 4y = 5

x= 17/5 and y=-13/10

Step-by-step explanation:

Step: Solve x−2y=6

x−2y=6

x−2y+2y=6+2y(Add 2y to both sides)

x=2y+6

Step: Substitute

3x+4y=5

3(2y+6)+4y=5

Simplify both sides of the equation)

(Add -18 to both sides)

10y=−13

10y

10 = −13 /10

(Divide both sides by 10)

y= −13 /10

Step: Substitute

x=2( −13 /10 )+6 x= 17 /5

(Simplify both sides of the equation)

x= 17 /5  and y=−13 /10

8 2/3 is the answer

step-by-step explanation: just use a calculator

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value