Answer:
1,4 and 1,0
Step-by-step explanation: if the x is the same then it is not a function.
Answer:

Step-by-step explanation:
Q17

For Q18 and Q19.
If ΔABC ≅ ΔSRT (congruent), then

Q20

Answer:
b) 94
Step-by-step explanation:
The Total Degree of a Triangle is 180 degrees. Knowing this, set up an equation.
68+26+x=180.
x is the complementary angle of the "?" angle.
Solve the equation.
94+x=180
x=86
Then Subtract 86 from 180 to find "?"
180-86=94
I hope this helps!
I believe it would be (b) (-2,1)