Question

Algebra help having to do with slopes?

What is the equation of the line through point (2, -3) with slope -4?

y = -4x + 5

y = (-2/3)x - 4

y = -4x + 2

13.) What is the equation of the line through point (-4, -5) with slope 3/2?

y = (3/2)x - 5

y = (3/2)x - 4

y = (3/2) x + 1

14.) What is the equation of the line through point (-1.5, 4.6) with slope 0?

y = x + 4.6

y = 4.6

y = -1.5x + 4.6

15.) What is the equation of the line through points (2, 5) and (5, 7)?

y = 3x + (11/3)

y = 2x + (11/3)

y = (2/3)x + (11/3)

16.) What is the equation of the line through points (-2, -1) and (2, -6)?

y = 4x - 7

y = -4x + 7

y = (-5/4)x - (7/2)

17.) What is the equation of the line through points (5, 3) and (5, -3)?

x = 5

y = x + 10

y = 5x

18.) What is the equation of the line through points (-2, 5) and (3, 5)?

y = x + 5

y = 5

x = 5

19.) What is the slope of the line 4x + y = 3?

-4

zero

-2

20.) What is the slope of the line 3x + 5y = 15?

-3/2

-3

-3/5

21.) What is the slope of the line y = 2?

2

zero

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22.) What is the slope of the line x = 4

4

zero

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23.) Which of the following equations is parallel to y = 3x + 6 and contains the point (3,2)?

y = -3x + 6

y = 3x - 7

y = 3x - 9

24.) Which of the following equations is parallel to y = (2/3)x + 6 and contains the point (4, -2)?

y = (2/3)x + 14

y = 3x - 3

y = (2/3)x - (14/3)

25.) Which of the following equations is parallel to y = -3x + 6 and contains the point (-3,-5)?

y = -3x -4

y = -3x - 14

y = (-3/2)x - 4

Answers

12) First Choice: y = -4x + 5

13) Third Choice: y = (3/2)x + 1

14) Second Choice: y = 4.6

15) Third Choice: y = (2/3)x + (11/3)

16) Third Choice: y = (-5/4)x - (7/2)

17) First Choice: x = 5

18) Second Choice: y = 5

19) First Choice: -4

20) Third Choice: -3/5

21) Second Choice: zero

22) Third Choice: undefined

23) Second Choice: y = 3x - 7

24) Third Choice: y = (2/3)x - (14/3)

25) Second Choice: y = -3x - 14

Hope this helped!

#1

Here's the formula

y=mx+b

m= slope

b= y-intercept

if given 1 point remember to plug them in the equation.

remember (x,y)

#2