Step-by-step explanation:
-2x+3=-4
-2x=-7
x=7/2=3.5..
HOPE IT HELPS.
The answer is A! This is because the formula is (x-h)^2 + (y-k)^2 = r^2.
Because there is no value, you can see that h and k are zero. This means that the center, (h,k) is (0,0).
![\qquad\qquad\huge\underline{{\sf Answer}}♨](https://tex.z-dn.net/?f=%5Cqquad%5Cqquad%5Chuge%5Cunderline%7B%7B%5Csf%20Answer%7D%7D%E2%99%A8)
Let's write the equation of line in slope point form ~
![\qquad \sf \dashrightarrow \:y - y1 = m(x - x1)](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3Ay%20-%20y1%20%3D%20m%28x%20-%20x1%29)
![\qquad \sf \dashrightarrow \:y -2 = 3(x -1)](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3Ay%20-2%20%3D%203%28x%20-1%29)
![\qquad \sf \dashrightarrow \:y -2 = 3x - 3](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3Ay%20-2%20%3D%203x%20-%203)
![\qquad \sf \dashrightarrow \:y = 3x -1](https://tex.z-dn.net/?f=%5Cqquad%20%5Csf%20%20%5Cdashrightarrow%20%5C%3Ay%20%3D%203x%20-1)
Now, let's use this equation of line to plot two points ~
- when x = 0, y = (3 × 0) - 1 = - 1
- when x = -1, y = (3 × -1) -1 = -4
Now, plot these points on graph ~
Answer: Assuming you mean that the original cost was doubled and now equals $60, the camera costed $30. Assuming the camera's price has been doubled from $60, it is $120. The wording is a bit unclear, so I'm giving you both answers.
Step-by-step explanation: To find half of the price of $60, simply divide it by 2, which gives you $30.
Multiply top equation by -2, then add equations so b drops out....solve for a...plug in a to get b