In order for two linear lines to be perpendicular, the product of their gradient must be -1.
Let's take y = x + b and y = -x + b
This is already in the form: y = mx + b, where m is 1 and -1 respectively.
Since the product of their gradient is -1, they are said to be perpendicular.
<h3>Total snow fall for three days is 8.75 inches</h3>
<em><u>Solution:</u></em>
Given that,
Snow fell over the past three days

<em><u>What was the total snowfall for the three days?</u></em>
Total snowfall = first day + second day + third day

Thus total snow fall for three days is 8.75 inches
Answer:
4.2 team members per day
Step-by-step explanation:
5 + 4 + 2 + 7 + 3 = 21
21/5 = 4.2