-2x=4x+9 |-4x
-6x=9 |:(-6)
x=-1,5
Check:
-2*-1,5=4*-1,5+9
3=-6+9
3=3
Can you please tell me what the first question says? i can read it, its too dark
Answer:
Terrance is incorect.
Correct output coordinates (-y,-x)
Step-by-step explanation:
Let
be the input coordinates.
First translation is a rotation of 180° clockwise about the origin. This translation has a rule

Second translation is a reflection over the line y = x. The general rule for the reflection across the line y=x has the rule

When a sequence of two translations are applied to the initial input coordinates, then

As you can see Terrance made a mistake and these two transformations do not cancel themselves out.
Answer:
(x, y) = (-4, 15)
Step-by-step explanation:
The two equations have the same coefficient for y, so you can eliminate y by subtracting one equation from the other. Here the x coefficient is largest for the first equation, so it will work best to subtract the second equation.
(3x +y) -(2x +y) = (3) -(7)
x = -4 . . . . . . . . simplify
Now, we can find y by substituting this value for x.
2(-4) +y = 7
y = 7 +8 = 15 . . . . . add 8 to both sides of the equation
The solution is (x, y) = (-4, 15).