A company manufacturing a roadside lighting system wants to estimate the average illuminance (brightness) at sunset. The illumin
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Answer:
If only slope:
If slope and y-intercept:
*both are correct answers see steps below*
Step-by-step explanation:
The equation to find the slope is .
The equation for slope-intercept form is .
First, find the slope between two points.
Keep the difference as a fraction if it can't be divided.
Next, plug in the slope value into the equation.
If you also need to find what b is, pick a point; (-2, -5) OR (3, -1). Then fill in the equation with it's x and y values. (I'll do both points to show two different results).
Point (-2, -5):
Add 1.6 on both sides to isolate the b. (since -1.6 is a negative, we need to cancel it out with its opposite)
Point (3, -1):
Subtract 2.4 on both sides to isolate the b. (since 2.4 is a positive, we need to cancel it out with its opposite)
It does mean that both slopes have different y-intercepts but it overly depends on the point. These steps will ensure you to the correct answer.