Answer:
d= all the x values
r=all the y values
Step-by-step explanation:
Answer: 5 * x * a
Step-by-step explanation:
It’s algebra
Answer: 1/4
Step-by-step explanation: 20 is a fourth of 80
Please mark brainleist if I got it right. I really need it to level up
1) True. In a function, each x value has exactly one y value.
2) False. For example

is a function, but is not linear. It is represented by a parabola.