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line A goes through (-6,-7) and has a y-intercept of -3. Line B is perpendicular to line A and goes through (-8,3). Write an equation in slope-intercept form for line B.

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Answer:

Therefore, the equation in slope-intercept form for line B is y = (-3/2)x - 9

Explanation:

To find the equation of line B, which is perpendicular to line A, we need to first determine the slope of line A.

The slope of line A can be found using the formula:

slope = (y2 - y1) / (x2 - x1)

Given that line A passes through (-6, -7) and has a y-intercept of -3, we can use the y-intercept to find a second point on line A.

Since the y-intercept is where the line crosses the y-axis, its coordinates are (0, -3).

Using the coordinates (-6, -7) and (0, -3), we can calculate the slope of line A as follows:

slope = (-3 - (-7)) / (0 - (-6))

slope = 4 / 6

slope = 2/3

Since line B is perpendicular to line A, its slope is the negative reciprocal of line A's slope.

The negative reciprocal of 2/3 is -3/2.

Now, we have the slope (-3/2) of line B and a point it passes through, (-8, 3).

To find the equation of line B in slope-intercept form (y = mx + b), we can substitute the slope and the coordinates of the point into the equation and solve for b.

Using the point-slope form of a linear equation:

y - y1 = m(x - x1)

We substitute the values:

y - 3 = (-3/2)(x - (-8))

Next, we simplify and distribute:

y - 3 = (-3/2)(x + 8)

y - 3 = (-3/2)x - 12

Finally, we isolate y to get the equation in slope-intercept form:

y = (-3/2)x - 12 + 3

y = (-3/2)x - 9

Therefore, the equation in slope-intercept form for line B is y = (-3/2)x - 9.

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