What is the equation of the line shown?
- y = 2x + 2
- y = -2-x
- y = x-2
Explanation from PART66Online
The line crosses the x-axis at x = -2 and the y-axis at y = -2. Its gradient is the change in y divided by the change in x between those points: (-2 - 0) / (0 - (-2)) = -1, and its y-intercept is -2. So y = -x - 2, written in the option as y = -2 - x. y = x - 2 has the right intercept but slopes the wrong way, and y = 2x + 2 crosses the y-axis at +2.
K
keidi.lifja asked · 26 Jun 2024
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