Answer:
It allows to to know y-intercept formula which is used to graph a line.
Step-by-step explanation:
Y-intercept formula:
y=mx+b
M: slope (keep in fraction if it is fraction, to help you graph)
B: y-interecept
Complementary angles are those angles whose sum is 90 degree.
The measurement of two complementary angles are

There sum have to be 90 degree. That is

Combining like terms ,

Moving 20 to right side

Dividing both sides by 5

So the measurement of the angles are

Answer:
The rate would be: 4:20 and the unit rate would be 1:5.
Step-by-step explanation:
Answer:
1. C
2. D
3. B
Step-by-step explanation:
Answer:
(-4,1) then becomes (0,1)
Step-by-step explanation:
Simply reflections. There are formulas for that.