The slopes of 2 perpendicular lines with be reciprocals with the opposite sign.
For example if you have the equation y=-5x+2, your slope is -5. In a line perpendicular to y=-5x+2, your slope would be 1/5. As for finding b in y=mx+b for your second equation, I would need more specific information.
Hope it helps!
Answer:
Step-by-step explanation:
Percent: The percent is the number with the % symbol: 20%.
Base: The base is the whole amount, which in this case is unknown.
Amount: The amount based on the percent is 40
Base = unknown
We can say that the length of line segment Y'Z' will increase by a scale factor of 2.
(x-5)(x+7).
explanation:
(x-5)(x+7)=0
<=> x-5=0 or x+7=p
<=> x=5 or x=-7