Q. Complete the point-slope equation of the line through (1,−1) and (5,2).Use exact numbers.y−(−1)=□
Find the slope: First, we need to find the slope of the line that passes through the points (1, −1) and (5, 2). The slope (m) is given by the formula:m=x2−x1y2−y1
Calculate the slope: Plugging in the coordinates of the two points into the slope formula, we get:m=5−12−(−1)m=5−12+1m=43So, the slope of the line is 43.
Use point-slope form: Now that we have the slope, we can use the point-slope form of the equation of a line, which is:y−y1=m(x−x1)where (x1,y1) is a point on the line (we can use either of the given points) and m is the slope.
Substitute values: Using the point (1, −1) and the slope 43, we substitute into the point-slope form:y−(−1)=43(x−1)This simplifies to:y+1=43(x−1)
Final point-slope equation: We can leave the equation in this form, as the problem asks for the point-slope equation with exact numbers. Therefore, the final point-slope equation of the line is:y+1=43(x−1)
More problems from Find the roots of factored polynomials