Hey, can someone help me out with these questions?

1. Find the slope of the line that passes through (-2,-3) and (1,1).
A) 1/3
B) 1
C) 2*
D) 4/3

2. A line with slope = 1/2 passes through the points (2,5) and (x,3). What is the value of x?
A) -1
B) 1
C) -2*
D) 2

3. For the equation -4y =8x, what is the constant of variation?
A) -4*
B) -2
C) 1
D) 2

4. Suppose y varies directly with x, and y = 24 when x=8. What is the value of y when x=10?
A) 10
B) 30*
C) 80
D)240

5. What is an equation for the line with slope 2/3 and y-intercept 9?
A) y = 2/3x
B) y=9x
C) y = 2/3x + 9*
D) 6= 9x +2/3

6. What is an equation in slope-intercept form for the line that passes through the points (1,-3) and (3,1)?
A) y=3x+1
B) y=x-3
C) y=2x+5
D) y= 2x-5*

1 answer

1. no
2. yes
3. no
4. yes
5. yes
6. yes
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