Q. What is the equation of the line that passes through the point (−6,3) and has a slope of −21 ?Answer:
Identify Equation Form: Identify the slope-intercept form of a line's equation.The slope-intercept form of a line's equation is y=mx+b, where m is the slope and b is the y-intercept.
Find Y-Intercept: Use the given slope and point to find the y-intercept b. We have the slope m as −21 and a point (−6,3) that the line passes through. We can substitute these values into the slope-intercept form to find b. So, 3=−21×(−6)+b.
Solve for b: Solve for b.3=3+bSubtract 3 from both sides to isolate b.b=3−3b=0
Write Line Equation: Write the equation of the line using the slope and y-intercept.Now that we have the slope m=−21 and y-intercept b=0, we can write the equation of the line.The equation is y=−21x+0, which simplifies to y=−21x.
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