4x-3y=18 determine missing coordinate (?,-4)

x = 1.5 (or as the fraction 3/2)

Step-by-step explanation:

For this question, it is asking you to substitute numbers as variables using the coordinate pair given. (Important:) When looking at coordinates, the left number inside the parenthesis is the x-coordinate (? in this case), and the number in the parenthesis on the right is the y-coordinate (-4 in this case).

With that being said, this equation is basically asking us to solve for x. Now that we know this we can solve. Substitute y for -4:

4x - 3(-4) = 18

4x - (-12) = 18

When a negative sign is in front of a negative number, it becomes a positive number.

4x + 12 = 18

Now we can solve this problem using the proper formula. Subtract 12 from both sides of the equation to cancel out the +12:

4x + 12 = 18

     - 12   -12

      4x  =  6

Now we need to single out the x in order to solve:

4x  =  6  

4        4

x = 1.5 (or simplified as the fraction 3/2)

Let me know if you need any more help with this topic, I hope that this helps.

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

step-by-step explanation:

$119.20

step-by-step explanation:

$372.50 - 60% off is $149. $149-20% off is $119.20