Q. What is the equation of the line that passes through the point (4,−1) and has a slope of 45 ?Answer:
Identify Slope-Intercept 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=45 and a point (x,y)=(4,−1). We can plug these values into the slope-intercept form to solve for b. −1=(45)⋅4+b
Solve for Y-Intercept: Perform the multiplication and solve for b.−1=5+bNow, subtract 5 from both sides to solve for b.b=−1−5b=−6
Write Line Equation: Write the equation of the line using the slope and y-intercept.Now that we have the slope m=45 and the y-intercept b=−6, we can write the equation of the line.y=45x−6
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