Question

Where does the line y=-4x + 9 cross the y-axis?

O aty = -4
O at x = 9
O at y = 9
O at x = -4

Answer 1

at y = 9

Explanation:

`y = mx + b`

where m = slope and b = y-intercept.

The question asks where does the line cross y-axis. That means what is the value of b or what is the y-intercept.

Because it is y-axis, we don't need x-axis/value or term. The value of b is 9, intercept y-axis at (0,9).

Therefore, the answer is third choice.