Question

Which statement describes what happens to the graph of when the value of a is changed from -1 to -3?

a) The graph translates 2 units down.
b) The graph widens (shrinks vertically).
c) The graph translates 2 units to the right.
d) The graph narrows (stretches vertically).

Answer 1

When the value of a is changed from -1 to -3, the graph narrows (stretches vertically).

Step-by-step explanation:

When the value of a is changed from -1 to -3 in the equation y = ax + b, the graph narrows (stretches vertically). This means that the graph becomes taller and narrower compared to the original graph. The value of a affects the slope of the line and when it becomes more negative, the line becomes steeper.