Question

Suppose a line passes through (a, –11) and (7, 13), and is parallel to the line y = 2x + 8. What is the value of a? Write the equation of the line.

Answer 1

a = 5

y = 2x - 1

Explanation:

Find y-intercept:

13 = 2(7) + b

b = -1

Find a:

-11 = 2a - 1

2a = 10

a = 5

y = 2x - 1