Not sure on a few of my answers, can you help?
1. Find the slope and y intercept : f(x)=-5x-7
slope = -5
intercept = (0,-7). Is this right?
-1/2x=-5/6 my answer was 5/3 was this right?
If I have these two sets of coordinate (-4,0) and (0,2) will my slope be -1/2? Same question as above with different coordinates: (0,3) and (-5,-3) m=6/5 am I right?
yes, yes, yes, yes.
1. Correct
-1/2x=-5/6
x = 5/3
If that is the equation of a line, though, the slope is undefined because it is a vertical line.
Check your signs on the first coordinate problem. The second is correct.
Confused one said all were right, but the other said the first coordinates had a problem with the sign, only one is negative , so would't the answer be negative,or is it in-fact right? I re-did it and came up with the same answer... what is wrong with that one?
Sure, I can help you with these questions.
1. Find the slope and y-intercept of f(x) = -5x - 7:
To find the slope and y-intercept, you can compare the equation to the standard form of a linear equation: y = mx + b, where m is the slope and b is the y-intercept. In this case, the slope is -5 and the y-intercept is -7. So, your answer is correct.
2. Solve for x in the equation -1/2x = -5/6:
To solve for x, you can multiply both sides of the equation by the reciprocal of -1/2, which is -2/1 or -2:
x = (-5/6) * (-2/1) = 10/6 = 5/3
So, your answer of x = 5/3 is correct.
3. Determine the slope between the two sets of coordinates (-4, 0) and (0, 2):
To find the slope between two points, you can use the formula: m = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are the coordinates of the two points. Plugging in the values:
m = (2 - 0) / (0 - (-4)) = 2 / 4 = 1/2
So, the slope between the two points (-4, 0) and (0, 2) is 1/2. Your answer is correct.
4. Determine the slope between the two points (0, 3) and (-5, -3):
Using the same formula as above:
m = (-3 - 3) / (-5 - 0) = -6 / -5 = 6/5
So, your answer of m = 6/5 is also correct.
If you have any more questions, feel free to ask!