Which ordered pair is a solution for the equation? y = 2x - 5

Question

Having trouble doing this one questoin >.<

Answer 1

OK....

Now that we have answer choices.....

 

take answer choice B (-1, -7)and substitute it into the given equation...

Remember, the first # is "x" and the second # is "y"

 

y = 2x - 5

-7 = 2(-1) - 5

-7 = -2 - 5

-7 = -7  Yes this is TRUE!

 

 

 

 

Could you list the answer choices for the ordered pairs?

If not, just substitute the x and y values of the coordinate into this equation and see if the statement is true.

 

For example (1,-4) substituted into the equation is 

y = 2x - 5

-4 = 2(1) - 5

-4 = 2 - 5

-4 = -3 NOT TRUE so the coordinate (1,-4) is not a solution.

 

Answer 2

There are INFINITELY many ordered pairs on the graph of this function (a straight line).

 

If you have a list, plug in each (x,y) that is suggested as an option, and see if the resulting equation is true. You did not include the list, so that's all we can do now.