To answer this question we need to know two things, 1) a linear equation is written as y=mx+b. and 2) a perpendicular line is the negative reciprocal of the given slope. So, with this in mind, we now know that the new slope is -1/5x. In order for the equation to pass through the given points (3,3), we need to plug it in with the new equation. We plug both x and y with 3 while leaving the y-intercept to be variable b. 3=-1/5(3)+b. Now, we solve this equation by isolating the variable. -1/5*3 is -3/5, and we add this to 3, so it will be 3 3/5. This will be our new y-intercept. The equation is now y=-1/5x+3 3/5.
Y = 5x - 12....the slope here is 5. A perpendicular line will have a negative reciprocal slope. To find the negative reciprocal, u flip the slope and change the sign. So we have 5 or 5/1.....flip the slope making it 1/5.....change the sign making it -1/5. So the perpendicular line will have a slope of -1/5.
y = mx + b slope(m) = -1/5 (3,3)....x = 3 and y = 3 now we sub into the formula and find b, the y int 3 = -1/5(3) + b 3 = -3/5 + b 3 + 3/5 = b 15/5 + 3/5 = b 18/5 = b
Amount of car loan taken by Scott = $5500 Amount of loan paid back by Scott = $7370 Then Amount of money paid as interest by Scott = (7370 - 5500) dollars = 1870 dollars Then Percentage of interest given for the car loan = (1870/5500) * 100 = 1870/55 = 34 percent So Scott had to pay a total interest rate of 34% in the four years.I hope the procedure is simple enough for you to understand and solve future problems.
