Question
Can you tell me if these are correct? If not, please explain, thanks. (8 questions) 1.Which equation represents a line with a slope of 3
Can you tell me if these are correct? If not, please explain, thanks. (8 questions)
1.Which equation represents a line with a slope of 3 and that contains the point (-4, 2).
A. y-2=3(x+4)
B. y+2=3(x-4)
C. x-2=3(y+4)
D. x-4=3(y+2)
I selected B
2.Write the equation of a line that passes through the points, (2, 1) and (3, 4) in point-slope form, y-y1=m(x-x1) .
A. y-1=3(x-2)
B. y-3=3(x-4)
C.y-2=3(x-1)
D. y-4=1/2(x-3)
I selected D
3.Which point does the line with equation y+4=3(x-7) pass through?
A. (7,-4)
B. (-7,4)
C. (4,-7)
D. (-4,7)
I selected A
4.The scatter plot graph shows the number of tickets (N) sold by an airline for a certain flight, based on the price (P), in dollars, of the ticket. Which of the following is most likely to be the equation of the trend line for this set of data?
I Couldnt upload graph but here's the plot points : (100,80),(200,72),(300,65),(400,40),(500,23)
A. N= -0.1P
B. N= -0.1P-100
C. N= -0.1P+100
D. N= -0.1P (100)
I selected B
5.Line L passes through points (0, 4) and (3, 6). What is the slope of a line that is parallel to line L?
A. -2/3
B. -3/2
C. 2/3
D. 3/2
I selected D
6.Which equation represents a line that is parallel to and that passes through the point (-4, 3)?
A. y= -2x-1
B. y= -2x-5
C. y= 1/2x-1
D. y= 1/2x-5
I selected A
7.Which best describes the polynomial -5x^3 ?
A. Third degree binomial
B. First degree trinomial
C.Third degree monomial
D.Third degree binomial
I selected C
8.What number should be added to the expression x^2+3x+ ___ in order to make a perfect square trinomial?
A. 2/3
B. 3
C. 9/4
D. 9
I selected B
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