*! *point r divides po in the ratio 1: 3. if the x-coordinate of r is -1 and the x-coordinate of p is -3, what is the x-coordinate of q? a.) -1/3b.) 3c.) 5d.) 6e.) -9

If i'm correct the answer is $15.97

You have to give us options

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.