Q1. 081424 - Linear Functions

Solve for y: 
4x + 3y = 9

• y = -3/4x + 3

• y = -4x + 9

• y = -4/3x + 3

• 3y = -4x + 9

Answer explanation

To solve for y, isolate y in the equation 4x + 3y = 9. Subtract 4x from both sides to get 3y = -4x + 9. Divide by 3 to get y = -4/3x + 3, which is the correct answer.

Joshua is trying to solve for y in the equation:

-3(2x - y) - 4 = 8

• y = 2x + 4

• y = -2x + 8

• y = 8 + 2x

• y = -2x - 4

Graph

• 
• 
• 
• 

• m = 3
• m = -3
• m = 3/2
• m = 2/3
• (0 , -3)
• (-3 , 0)
• (0 , 2/3)
• (0 , 3)

The equation that represents the following graph is (a)   .

• y = 3x + 2
• y = -2x + 3
• y = 2x + 3
• y = -3x + 2

Write a linear function in point-slope form with a slope of 5 that passes through the point (3,4). The function is y - ​ (a)   = (b)   (x - ​ (c)   ).

• 5
• -5
• -5/1
• – 3
• – 4
• 4
• 3

Which option shows a linear function, in point-slope form, which has a slope of –5 and passes through (6, –2)

• y + 2 = –5(x – 6)

• y – 2 = –5(x + 6)

• y – 5 = 6(x – 2)

• y – 6 = –5(x + 2)

• y + 6 = –5(x + 2)