SOLUTION: two lines, L1 and L2, intersect at (4,7) and are perpendicular to each other. the y-intercept of L1 is 9
what is the gradient of L1???
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Question 1025811: two lines, L1 and L2, intersect at (4,7) and are perpendicular to each other. the y-intercept of L1 is 9
what is the gradient of L1???
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Find first the equation for Line_1.
Two points on Line_1 are (0,9) and (4,7).
Slope is .
Equation for Line_1 is .
The question of finding gradient of Line_1 reads like you want the slope;
which is now found, , for LINE_1.
The slope of Line_2 is the negative reciprocal of that of line_1 because these
two lines were given as perpendicular, so Line_2 has slope .
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