Answer:
(5,4) & (8,-10)
Step-by-step explanation:
First step:

You can use any number you want for b (I used 4)

Make x=0


Make y=0

Subtract 4 from both sides

Divide both sides by 

Second step:
In order to make a line perpendicular to another the slope of the second line will be the negative inverse of the first line. So
will be
for the second line.
Then you just need to repeat the process in first step to get the intercepts. (Again I used a random number like -10 for b)
Answer:
x = 15
Step-by-step explanation:
I have this all put under a photo. Let me know if you need any explanation
Answer:
- n + q = 25
- 0.05n + 0.25q = 4.05
Step-by-step explanation:
<em>Two equations</em> are required to represent this problem as posed.
1. An equation for the number of coins:
n + q = 25
2. An equation for the value of the coins:
0.05n + 0.25q = 4.05