What was Brooke's error? •She found the incorrect slope in step 1. •She mixed up the x- and y-coordinates when she plugged in the point in step 2. •She found the incorrect y-intercept in step 2. •She mixed up the slope and y-intercept when she wrote the equation in step 3.

Question:

Brooke found the equation of the line passing through the points (-7, 25) and (-4, 13) in slope-intercept form as follows.

Step 2:

Step 3:

She mixed up the slope and y-intercept when she wrote the equation in step 3

Step-by-step explanation:

Given

The steps to determine an equation

Required

Determine the mistake in Brooke's step

Up to the end of step 2, Brooke's step was correct.

Her mistake was in writing the equation.

The form of an equation is;

Where

---- in step 1

 ---- in step 2

Substitute values for m and b in

Hence:

Option 4 answers the question

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step-by-step explanation: