m = (Y2-Y1)/(X2-X1)
y = m x + b
b is where the line hits the y axis when x = 0
and no,
You do not seem to have made any attempt to do these problems or to tell us what specifically you are stuck on. I do not need practice.
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
4 answers
#5 is a great one to start with since you now know that y=mx + b
where m is the slope and b is the y-intercept : )
where m is the slope and b is the y-intercept : )
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
Answer: 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
Answer: C) -2
3. For the equation -4y =8x, what is the constant of variation?
A) -4
B) -2
C) 1
D) 2
Answer: B) -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
Answer: B) 30
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
Answer: C) y = 2/3x + 9
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
Answer: D) y= 2x-5
Hopes this helps anyone in the future! Sorry I cannot fully explain the answers and how I got them as I am not great at explanation, but nonetheless I hope it is useful.
A) 1/3
B) 1
C) 2
D) 4/3
Answer: 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
Answer: C) -2
3. For the equation -4y =8x, what is the constant of variation?
A) -4
B) -2
C) 1
D) 2
Answer: B) -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
Answer: B) 30
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
Answer: C) y = 2/3x + 9
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
Answer: D) y= 2x-5
Hopes this helps anyone in the future! Sorry I cannot fully explain the answers and how I got them as I am not great at explanation, but nonetheless I hope it is useful.
:) Is right! Tysm I was really struggling
11 answers