Question

Assume y = 100 − 2x. If x goes up by 3, the corresponding y-value changes by:

Answer 1

Given: y = 100 - 2x

New: y = 100 - 2(x + 3)

= 100 - 2x - 6

= 94 - 2x

The original equation had a y-intercept of 100. The new equation has a y-intercept of 94. The y-value changes -6 units

Answer: -6