Question

MATH HELP!!!!

Which of the following has a slope of –2 and a y-intercept of 4?
Question 3 options:



y = –2x + 4



y = 2x + 4



y = 2x – 4



y = –2x – 4
Question 4 (Mandatory) (2 points) Question 4 Unsaved
What are the x- and y-intercepts of the line?

2x + 3y = –12


Question 4 options:



x-intercept –6, y-intercept –4




x-intercept –6, y-intercept 4




x-intercept –4, y-intercept 6




x-intercept 4, y-intercept –6

Question 5 (Mandatory) (2 points) Question 5 Unsaved
Which ordered pair is on the graph of the equation 4x + 3y = 13?
Question 5 options:



(1, 6)



(1, –3)



(0, –3)



(4, –1)



Which of the following has a slope of –3 and a y-intercept of –4?
Question 9 options:



y = –3x + 4



y = 3x + 4



y = 3x – 4



y = –3x – 4

Answer 1

Hi ,

1 ) If m , c are slope and y - intercepts then

the equation of the line y = mx + c

answer: y = -2x + 4

4 ) 2x + 3y = - 12

divide each term with -12, we get

( 2x / -12 ) + ( 3y / -12 ) = ( -12 / -12 )

x / ( -6 ) + y / ( -4 ) = 1

Therefore ,

x - intercept = a = -6 ,

y - intercept = b = -4

5 ) put ( 4 , -1 ) in the equation ,

4x + 3y = 13

4 × 4 + 3 ( - 1 ) = 13

16 - 3 = 13

13 = 13 ( true )

therefore ,

( 4 , - 1 ) lie on the graph of 4x + 3y = 13

6 ) y = -3x - 4

slope = m = -3 ,

y - intercept = c = -4

I hope this helps you.

: )

Answer 2

Q.3 y=2x+4
Q.4x-6,y-4
Q.5 (4,-1)
Q.9.3x+4