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If the graphs of the linear equations shown are perpendicular, what is the value of k? y=7x+4, 3y=kx-6.

A. 1/7
B. 3/7
C. -1/7
D. -3/7

The cost of a taxi ride includes an initial charge of $2.00. if a 5km ride cost $6.00 and a 10km ride cost $10.00, determine the cost of a 15km ride.

If its non of them tell me..valerie took a day-trip. she drove from her house for a while and took a coffee break. after her coffee break, she continued driving. after  2  hours of driving after her coffee break, her distance from her house was  210  miles. her average speed during the whole trip was  60  miles per hour. valerie created the equation  y−210=60(x−2)  to represent this situation, where  xx  represents the time in hours from her coffee break and  yy  represents the distance in miles from her house. which graph correctly represents valerie's distance from her house after her coffee break?

Point q is located at (−4,6). point r is located at (8, 6). what is the distance from point q to point r?