Answer:
No.
Step-by-step explanation:
To be a function, each input (x value) must go to exactly one output (y value). In this instance, the input 5 has an output of -15 and 4. This breaks the rule. Therefore, this relation is not a function.
Answer: 6-3x=18
Step-by-step explanation: You just have to read what the question says for example Six less than three times a number is 6-3x=18
Answer:
<h2>x = 6, y = 24</h2>
Step-by-step explanation:
We have the vertical angles and supplementary angles.
Vertical angles are congruent. Therefore we have the equation:

Supplementary angles add up to 180°. Therefore we have the equation:

Solve (2):

Put the value of x to (1) and sole:

The answer is c that’s the best answer
Solution:

Step 1:
For angle D, Opposite is 12 and adjacent 20