Tutors Answer Your Questions about Linear-equations (FREE)
Question 39377: After 2 minutes on a treadmill, Jenny has a heart rate of 82. After 3 minutes she has a heart rate of 86. Assume that there is a linear equation that gives her heart rate h in terms of time on the treadmill t. Find the equation and use it to predict her heart tate after 10 minutes on the treadmill.
Click here to see answer by venugopalramana(3286) |
Question 40447: Line 2 is perpendicular to a line that passes through the points (4,-3) and (-2,6). How do you solve this using the slope intercept formula (y=mx+b)? I tried to solve it about a hundred times and because it involves a fraction I became entirely confused. Help?! Thanks so much!
Click here to see answer by Nate(3500) |
Question 40451: The Question is Line 3 has a slope of 3/4 and passes through the point (-3,7).
So, I know the slope is 3/4 but my teacher wants us to solve this problem using the slope formula, point slope formula, slope intercept formula and the general form. I do not know how to start this because I wasn't given the x1,y1 points and the x2,y2 points. Help?!
Click here to see answer by Nate(3500) |
Question 40502: I am studying for the SAT and one of the sample problems is:
For all numbers x and y, let x (they have a triangle drawn between x and y. I do not know what the triangle means)y be defined as x triangle y = x squared + xy + y squared. What is the value of (3 triangle 1) triangle 1?
Thank you soooo much! :)
Click here to see answer by stanbon(57262) |
Question 40559: 6. Solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
4x – 3y = 1
-12x + 9y = 5
Click here to see answer by stanbon(57262) |
Question 40585: I am stumped on this question. Can someone please help me with it.
Find the equation, in standard form, including all integer coefficients, of the line perpendicular to 3x – 4y = 9 and passing through (-2, -1).
Click here to see answer by stanbon(57262) |
Question 40558: 5. Solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
6x + 2y = 2
3x + 5y = 5
Click here to see answer by junior403(76) |
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