Question

Liner equation with 2 variable question
Is this ordered pair a solution of this given equation?
(8,7), y=-1/4x +5

Answer 1

Okay. What you have to do is plug in the numbers. Remember that (x, y), so x = 8 and y = 7.

Answer 2

Your equation would be: \[7=1\div4*8+5\]

Answer 3

Do you need help solving this equation?

Answer 4

Yes thanks

Answer 5

Okay. Forget about the "=7" for now. Remember PEMDAS. Parenthesis, then Exponents, then Multiplication OR Division, then Addition OR Subtraction. So we have no parenthesis or exponents. We do have multiplication and division, though. Since we work on equations left to right and it is division OR multiplication, lets do division first:

What is:\[1\div4\]?

Answer 6

Think of one whole pizza divided into four. Think about quarters.

Answer 7

1 divided into 4 is 0.25

Answer 8

Okay, so now we have a simpler equation:\[7=0.25\times8+5\]

Answer 9

Okay, based on PEMDAS, we multiply next. 0.25 * 8 = ?

Answer 10

If you don't have a calculator with you. Think about how many quarters make 1 whole.

Answer 11

0.25*8=2

Answer 12

Great job! Now you have a simpler equation:\[7 = 2+5\] Now, I am sure you know what 2 + 5 is. It's 7. Does 7 = 7? Yes it does! Is this order pair a solution to this equation? Yes!

Answer 13

Yes its a solution

Answer 14

So, your final answer is:

"Yes, this ordered pair, (8, 7), is a solution this equation because 7 = 7."

Answer 15

It was a pleasure working with you! :-) Thanks for the medal.

Answer 16

@kewlgeek555 I don't think that (8, 7) is a solution. You forgot to consider the negative sign (-1/4x)

Answer 17

:-O @theANNEbeatable You are right! :-OOO T_T

Answer 18

\[7=-1\div4 \times8+5\]\[7=-0.25\times8+5\]\[7=-2+5\]\[7=3\]Okay, so ...
No, the ordered pair does not give a solution to this equation. Sorry @shakur

Answer 19

Thanks @theANNEbeatable