Question

A line passes through the point (4, –2) and has a slope of 1/2. What is the value of a if the point (–4, a) is also on the line?

Answer 1

Answer:-6

Explanation:

Answer 2

*Hint: In order to solve this, you first need to find b (the y-intercept) before finding a.

y = mx + b
-2 = 1/2 (4) + b
-2 = 2 + b
b = -4

And now you find a.

a = 1/2 (-4) - 4
a = -2 -4
a = -6