3. Given A(3,5), B(7, 10), C(0, 2), and D(1, a), determine the value of a for which:
a) Line AB is parallel to line CD.
b) Line AB is perpendicular to line CD.
please help!! i’m failing grade 10 precal and i need this❤️ will give 15 points

1)  if Line AB is parallel to line CD then value of a is: a=3

2) if Line AB is perpendicular to line CD then value of a is: a=1

Step-by-step explanation:

We are given A(3,5), B(7, 10), C(0, 2), and D(1, a) we need to find value of a for which:

We can use slope formula: to find value of a according to conditions given.

We are given:

a) Line AB is parallel to line CD.

When 2 lines are parallel there slope is same so, using this we can find value of a

So, if Line AB is parallel to line CD then value of a is: a=3

b) Line AB is perpendicular to line CD.

When 2 lines are perpendicular there slopes are opposite of each other so, using this we can find value of a

So, if Line AB is perpendicular to line CD then value of a is: a=1

answer:

3 bags of apples and 2 bags of oranges.

step-by-step explanation:

answer:

125 yards

explanation:

75+50=125. that is my answer