Use substitution
Plug in 5x for y
5x = 2x - 15
Subtract 2x
3x = -15
Divide by 3
x = -5, y = -25
Solution: (-5, -25)
Answer:
2/5
Step-by-step explanation:
The lines are parallel, so they have the same slope.
The red lines has a slope of 2/5
The green line has a slope of 2/5
Answer:
45°
Step-by-step explanation:
Angle CDE is half of a right angle
1. 90°/2 = 45°

The sign at the end changes because both sides of the equation are being divided by a negative number.