Mathematics: PLEASE HELP WILL GIVE BRAINLIEST Answers Mortys total cost for the items he has purchased : ? Mortys revenue from the sales : ? Mortys total profit was : ?

PLEASE HELP WILL GIVE BRAINLIEST Answers Mortys

kingofmortals6981

05.12.2021

The other half of the co-ordinate is 2.

Step-by-step explanation: Let, 'b' be the other half of the co-ordinate (?, -3) that lies on the given straight line as follows:

4x+5y=-7~~~~~~~~~~~~~~~~~~~~~~~(i)

So, we can say that the point (b, -3) lies on the line (i). That is, the point (b, -3) will satisfy equation (i).

Substituting (x, y) = (b, -3) in equation (i), we get

$4x+5y=-7\\\\\Rightarrow 4\times b+5\times (-3)=-7\\\\\Rightarrow 4b-15=-7\\\\\Rightarrow 4b=8\\\\\Rightarrow b=2.$

Therefore, the value of 'b' is 2.

Thus, the other half of the co-ordinate is 2. And the complete co-ordiantes are (2, -3).

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