Answer:
87 deg
Step-by-step explanation:
Theorem:
Vertical angles are congruent.
If the angles are vertical angles, they are congruent.
Congruent angles have the same measure.
If <1 measures 87deg, then <2 also measures 87 deg.
For the question mark, we can insert a variable considering it is an unknown number.
You need to move everything to one side.
Subtract 2x on both sides, to get the equation 3y = -2x + 12.
Then, divide by 3 on both sides, to get y = -2/3x + 4.
Now we know that the slope is -2/3, and the y-intercept is (0,4).
Plot a point at (0,4), and plot according to the slope, then take the x-intercept plotted.
Answer: f(x)=2-2^2
Step-by-step explanation:
it is exponential